Best products from r/volcas
We found 48 comments on r/volcas discussing the most recommended products. We ran sentiment analysis on each of these comments to determine how redditors feel about different products. We found 65 products and ranked them based on the amount of positive reactions they received. Here are the top 20.
1. Maker Hart LOOP MIXER - Portable Audio Mixer with 5 Channels, 5 x 1/8" Stereo and 1/4" Mono to Stereo DM2S Adapter
- MIXER WITH VERSATILITY - Mix audio/music from computers, smartphones, tablets, gaming consoles, Amazon Echo/Dot, mics and instruments
- AMPLIFY SIGNAL - Powered by AC adapter, increase signals from MIC to LINE level to a max gain of 50 dB for each input
- STEREO & MONO - 5 x 1/8" (3.5mm) stereo jacks with Mono to Stereo DM2S adapter included
- 3 OUTPUTS - 1/8" (3.5mm) Headphones, Output to speakers, and REC OUT stereo jacks for 3 simultaneous outputs
- TOUGH YET PORTABLE - Portable yet durable build with a smooth, intuitive design
Features:
2. Behringer Micromix MX400 Ultra Low-Noise 4-Channel Line Mixer,Black
- Ultra-compact 4-channel line mixer
- Highest sonic quality even at maximum output level
- Input Level control for each channel
- Power adapter included
Features:
3. USB Audio Adapter with 3.5mm Jack, CableCreation USB External Stereo Sound Card with 3.5mm Earphone and Microphone for PS4, PS5, Windows, Mac, Linux,Plug and Play, Black
- ❤ [Add 3.5mm Audio Ports]: USB audio adapter adds 3.5mm audio jack to pc, laptop, computers; provides an alternative solution for a failed original sound card; works as an audio splitter for an audio output plug and microphone input plug.
- ❤ [High Quality Sound]: Built-in with HS-100B chip, 48K / 44.1KHz sampling rate for both Playback and Recording, Skype / Hangout / Live Games / TeamSpeak ; protects against electromagnetic interference and enjoy the stable and best sound quality.
- ❤ [Audio Interface]: Audio-in jack (black color) support TRRS (with microphone) and TRS (without microphone) earphone; microphone jack (pink color) supports mono input. ►Notes: 1. EarPods were tested not support mic input but only audio output with this adapter; 2. Doesn't work on most Car system or smart TV.
- ❤ [Wide Compatibility]: Support USB 2.0 Full Speed (12Mbps) Specification, compatible with PS4, PS5, Raspberry Pi, Surface Pro, MacBook Pro; Windows 7 / 8 / 8.1 /10 / XP / Vista, Mac OS X, macOS, Linux and other mainstream systems. NOT WORKING ON PS3.
- ❤ [Superior Features]: Plug-n-play with no external driver required, USB bus-powered, no external power required for this convenient sound card. CableCreation provides 24-month product warranty and lifetime technical support backed.
Features:
4. Vaultz Locking Supplies & Pencil Box with Key Lock, 5"x 2.5"x 8.5", Tactical Black (VZ00192)
- VERSATILE - At 8.5 x 5 x 2.5 inches, this small safe box is the perfect size for not only storing pens, pencils, and other school supplies, but also important items like cash and medication.
- STRONG - The Vaultz mini safe for kids features chrome-steel corners and a metal trim designed to reinforce the exterior and provide extra protection to your personal belongings.
- EASY ORGANIZATION - Keep all your writing instruments, notes, and other small items in order with the mesh pocket and elastic pencil band located inside of our kids lock box.
- SECURE - Whether used as a pencil box for boys and girls or as a mini money safe, this stylish locking box comes with a convenient key lock for security and greater peace of mind.
- CUSTOMER SUPPORT - If you have any questions or concerns about your kids safe, our team is available 24/7 and will be happy to help you lock in on a solution.
Features:
5. Arturia Keystep Controller & Sequencer
Slimkey keybed with velocity and aftertouch Arpeggiator mode features up, down, inclusive, exclusive, random, note order, double up, double down modes Sequencer mode features 8 polyphonic step-sequences with Rest, Tie, and Legato note entry Rate control and tap tempo slave the REC, PLAY, and STOP bu...
6. Roland GOMIXER Audio Mixer for Smartphones,White
- Palm-sized audio mixer for smartphones Ideal for both desktop and mobile use
- Multiple inputs-connect a mic, musical instruments, and media players
- Plug and play-ready for immediate use right out of the box
- Connection cables for iOS and Android devices included
- Powered from the smartphone connection; no batteries or AC adapter required
Features:
7. Behringer Xenyx 502 Premium 5-Input 2-Bus Mixer with XENYX Mic Preamp and British EQ
- Premium ultra-low noise, high headroom analog mixer
- State-of-the-art, phantom powered Xenyx Mic Preamp comparable to stand-alone boutique preamps
- Neo-classic "British" 2-band EQ for warm and musical sound
- Main mix, stereo CD/tape plus separate headphone outputs
- CD/tape inputs assignable to headphone output or main mix outputs. Power consumption 13 W
Features:
8. Hosa CMP-110 1/4" TS to 3.5 mm TRS Mono Interconnect Cable, 10 Feet
- Nickel-plated plugs for rugged durability and efficient signal transfer
- Oxygen-Free Copper (OFC) conductors for enhanced signal clarity
- OFC spiral shield for effective EMI and RFI rejection and flexibility
- 3.5 mm (1/8 inch) stereo to 1/4 inch mono, 10 ft length
Features:
9. Sabrent USB External Stereo Sound Adapter for Windows and Mac. Plug and Play No Drivers Needed. (AU-MMSA)
- Connectors: USB Type-A, Stereo output jack, Mono microphone-input jack.
- Driverless for Windows 98SE/ME/2000/XP/Server 2003/Vista/7/8/Linux/Mac OSX.
- USB bus-powered, no external power required.
- Reverse Compliant with USB Audio Device Class Specification 1.0
Features:
10. Hosa CMP-153 3.5 mm TRS to Dual 1/4" TS Stereo Breakout Cable, 3 Feet
1/4-inch Plugs Color coded - Red and WhiteScores of applications in live performance, recording and computer multimedia settings
11. Hosa CMP-159 3.5 mm TRS to Dual 1/4" TS Stereo Breakout Cable, 10 Feet
- This cable is designed to connect an audio device with a mini stereo phone output to Pro audio gear with unbalanced phone inputs. It is ideal for connecting an iPod, laptop, or similar device to a mixing console
- Nickel-plated plugs for rugged durability and efficient signal transfer
- Oxygen-free Copper (OFC) Conductors for Enhanced signal clarity
- Ofc Spiral shields for effective EMI and RFI Rejection and Flexibility
- Connectors): 3.5 mm TRS to dual 1/4 in TS. Length: 10'
- 1/8 inch TRS to dual 1/4 inch TS cable
- 10 feet, Y cable
- 1/8 Inch TRS to Dual 1/4 Inch TS Cable
- 10 Feet, Y Cable
Features:
12. EMIE Minimalist Wooden Portable Bluetooth Speaker , Radio-designed Home Speaker with Super Bass , Works with Apple iPhone , iPad , Samsung and More
Upgrade Sound Quality: Upgraded version deliver crystal clear mid, high sound and amazing bass. Great sound quality tuned by professional.2W radio driver and passive subwoofer.Radio-designed Minimalist Portable Bluetooth Speaker : Minimalist design,combine modern with vintage,suitable for all genera...
13. Movo MC3 3.5mm TRS to TRRS Adapter - Microphone Adapter for iPhone and Android Smartphones and Tablets
- MUST HAVE ADAPTER: Most microphones don't work out of the box with smartphones and tablets. This adapter solves that problem
- COMPATIBILITY: Connect wireless microphones, lavalier microphone, and any other microphone to your iPhone or Android smartphone or tablet
- 1-YEAR WARRANTY: We’ve got your back. Our products are designed to ease your technical woes, not add to them. Our friendly US-Based support is here to help
- TRANSFORM YOUR AUDIO: Built-in audio just doesn't cut it. Improve your vlogs, live streams, and more by capturing high-quality from an external battery-powered microphone
- PRO TIP: When using this adapter, be sure to unplug it before listening to the playback. If you don't, you will not hear anything
Features:
14. Rock Band 3 Wireless Keyboard for Wii and WiiU
All-new Keyboard instrument for Rock Band 3Plays Rock Band 3 Keyboard, Guitar* and Bass* parts / Two-octave design with 25 velocity-sensitive keys (*Does not support Guitar/Bass Pro Mode)Play real Keyboard parts in the new Rock Band Pro Mode / Versatile layout: Play like a Guitar or on a tabletopUse...
15. New Hand made ABY Guitar pedal Switch Box A/B Combiner Footswitch TRUE BYPASS Amp/guitar AB
- 1.Use Boss/Ibanez style 9v 2.mm barrel-style adapter (NOT INCLUDED) for LED power only.,Dimension:112(L)X60(W)X32(H)mm / 4.4"*2.36"*1.26
- 2.Will work without power minus LED indication. Our LED circuits does not screw with your tone
- 3.Split between your amps or combine the two anytime
- 4.Use for silent tuning and/or feed your tuner while playing
- 5.Split between two instruments without unplugging and Low price too
Features:
16. Sabrent 60 Watt (12 Amp) 10-Port [UL Certified] Family-Sized Desktop USB Rapid Charger. Smart USB Ports with Auto Detect Technology [Black] (AX-TPCS)
- Smart-port technology maximizes compatibility with Android, Apple, and other devices, enabling charging power up to 12 Amps among 10 ports, or 2.4 Amps per port.
- Charge your devices at full speed with 60 watts and 12A total output. Perfect for International Travel- AC 110-220V input voltage.
- Charge 10 devices simultaneously. Overcharge protection Charges safely.
- Charge 4 tablets and 6 smartphones, simultaneously.
- Charge more than your smartphone or tablet with this multi-port adapter. Charge your e-reader, Bluetooth headphones, portable speakers and any other devices with a USB cord.
Features:
17. Basesailor USB Female to Female Adapter (2-Pack), USB 3.0 Female to Type A Female 3.0 Coupler for Connecting Two USB Male Ends, Extension Connector
(NOTE: THIS IS NOT AN OTG ADAPTER) Enables you to connect two USB cables together for a longer cable.Occupies very little space and compact enough to carry it everywhere.Offers data transfer speeds of up to 5 Gbit/s and also supports up to 2 Amps of power output.Superior construction with aluminum-a...
18. Hosa CMP-105 1/4" TS to 3.5 mm TRS Mono Interconnect Cable, 5 Feet
- Length: 5 ft.
- Left connector): 1 x phone mono 6. 3 mm - male
- Right connector): 1 x mini-phone stereo 3. 5 mm - male
Features:
19. UGREEN 3.5mm 1/8" TRS to Dual 6.35mm 1/4" TS Mono Stereo Y-Cable Splitter Cord Compatible for iPhone, iPod, Computer Sound Cards, CD Players, Multimedia Speakers and Home Stereo Systems 3FT
- UGREEN 3.5mm to 1/4 Y stereo cable provides a high quality connection between your laptop or PC with a 3.5mm jack output and AV receiver, amplifier, mixer, Hi-Fi stereo audio system, home theater system, computer sound, recording equipment, or speaker with dual 6.35mm jack inputs. Suitable for all kinds of audio signal transmission and interconnection between electrical appliances.
- Hi-Fi Sound: This 3.5mm to 1/4 splitter cable brings you pristine and clean sound with high purity copper and multi shielding, ensuring high fidelity sound quality and providing optimal signal transfer. The dual 1/4 to 3.5mm cable is perfect for studio or live performances
- Solid Nylon Braid Protects Your Cable: This 3.5 mm stereo to dual 6.35 mm mono jack plug audio cable is equipped with a nylon braid against scratching and abrasion, prolonging its lifespan. Note: The length of two Y Splitter Cords is 23cm/9inch
- Upgraded Durability: The 1/4 splitter to 1/8 cable adopts 24K 15U gold-plated plugs to resist oxidation & corrosion, not only improving the durability but greatly enhancing its sound quality
- Powerful Connectivity: Solid construction and secure connections on the 3.5mm 1/8" male end and on the 6.35mm 1/4" male connector end.
Features:
20. AmazonBasics Blue, White, and Yellow Microfiber Cleaning Cloths - Pack of 36
Ultra soft, non-abrasive microfiber cloths will not scratch paints, coats or other surfacesCleans with or without chemical cleaners, leaves lint and streak free resultsAbsorbs eight times its own weightPack comes with three different towel colors (blue, yellow, and white)Rinse and reuse 100's of tim...
I can second pretty much everything in this comment.
-A decent pair of headphones or an amp, (which you'll need either a 3.5mm to 1/4" adapter for a standard instrument cable or a just a 3.5mm to 1/4" cable)
-the first thing I realized after getting my first volca was how beneficial a midi controller was for it. The Keystep gives you the ability to control not only your FM and midi devices but USB and CV stuff as well (which if you get hooked after opening the door with your volca you may need)
It also gives you slots to make 8 polyphonic sequences with 64 steps each. Which is pretty neat.
-a multi effects guitar pedal (or even a mixer with onboard FX which could come in handy if your collection grows) is also a great investment. A little delay or chorus goes a looong way.
i_dont_like_reddit is right about FM synthesis, it's like learning to swim in a wave pool. But if you play with it and watch some good videos, it can be very fun.
watch cuckoo's Volca FM video. It will greatly speed up your proficiency with the box.
And his FM tutorial is pretty good in getting to understand the FM world.
Lastly, Start saving up. You're gunna need it.
I think everyone has their own definition of loud.
This little Emie speaker is $40, pretty loud and decent battery life.
If you're willing to step up your budget a little bit, you can pick up a Fender Frontman 25R for under $100. It's small, light, and has gain and reverb as well. It'll get way loud.
You can pick up a Roland Microcube for the same amount of money-- it's a 5 watt but that's plenty loud for home, can be used to play pretty loudly in a smaller but crowded room, and have more fx built in.
(edit: $100 used typically but apparently $150 new)
If you want a combination of potentially really loud, multiple lines in (so you can, say, do FX on one unit but run the others as a clean line, and still have a microphone XLR in) you can pick up a Roland Street Cube for like $250 (or cheaper as a craigslist special but it's less common).
I've had the street cube for years. It's a great, super portable battery amp, you can sit on it if you need to (it's meant for street buskers) and runs goddamn long on six AA batteries.
As mentioned, dunno your budget but personally I'd recommend the Micro Cube or Street Cube. Well worth the purchase.
I got this one. Works great 👍
It just takes a regular 3.5mm trs (Tip ring sleeve) cable like everything usually uses and it converts it to 3.5mm trrs (tip ring ring sleeve) which some devices like iPads and iPhones and tablets and such need in order to know that it’s an incoming signal and to be able to record instead of like when you plug in a pair of headphones for example, which the phone senses as outgoing and will then push audio.
Movo MC3 3.5mm TRS (Female) Microphone Adapter Cable to TRRS (Male) for iPhone and Android Smartphones https://www.amazon.com/dp/B01N9CJDVE/ref=cm_sw_r_cp_api_i_-X3tDbRJ8HNW7
It’s worth the investment. I use mine al the time for quick recording sessions for music ideas. Sound quality is much better than the built in mic on the phone. Do some reading, it’s fun to learn. It’ll definitely do you good and if you need better quality you can get into different interfaces and stuff. It’s not difficult to learn, it’s just a lot of little things,
just take it in pieces and have fun with it 🙂
This was a surprise to me, too, when I got my first Volca after collecting a few Pocket Operators. They still play nicely together, but not in the same way. If you plan on getting more Volcas, a Volca Mix <https://www.korg.com/us/products/dj/volca_mix/\> may not be a bad idea (it can power three additional ones), though it is more expensive than other solutions.
Otherwise, there are a number of affordable mono mixers out there. I've seen people mention the Behringer Micromix before <https://www.amazon.com/Behringer-Micromix-MX400-Low-Noise-4-Channel/dp/B000KGYAYQ\>, but you'll need some adapters for 3.5mm to 6.35mm jacks. This will strictly be mono, however, so if you plan to add some stereo devices to the mix (pun intended), you'll hit a wall pretty quickly. Behringer has a range of other mixers, and you may want to check something out in the Xenyx range <https://www.amazon.com/Behringer-502-Premium-5-Input-British/dp/B000J5UEGQ/ref=sr_1_9?crid=120WM7ZC873VD&keywords=behringer+xenyx&qid=1555091076&s=gateway&sprefix=behringer+z%2Caps%2C160&sr=8-9\>, where even the lowest-end one (linked) will give you plenty of room to expand.
Personally, I just bought a Roland GO: Mixer <https://www.amazon.com/Roland-GO-Mixer-Smartphones-GOMIXER/dp/B01MYC4DVP/ref=sr_1_1?keywords=roland+go+mixer&qid=1555091001&s=gateway&sr=8-1\> to use between a Volca, a few PO's, and a microphone for straight-to-phone video/audio recording purposes, and I've enjoyed it. If you don't plan on recording things and just need something to mix, this will be super overkill for you.
Don't know about the Midiplus Classic 25, but two options I've seen on here a lot are the Artuira Keystep and the Rock Band 3 Keyboard controller
https://www.amazon.com/Arturia-430201-KeyStep/dp/B01BPSBU40/
https://www.amazon.com/Rock-Band-Wireless-Keyboard-Wii-WiiU/dp/B003RS19XE/
Both have 5-pin midi out. The rock band keyboard can be powered by batteries, and is probably the cheapest midi keyboard control you can get with the midi out option. I haven't used it, but it seems like it'd be perfect for a portable setup.
I have the Keystep. Ended up going with it even thought it is 4x the price of the rock band controller for a few reasons. It has a bigger range (32 vs 25 keys I believe), more controls (not sure if the rock band keyboard has octave controls), and a nice built in appegiator and sequencer that can sync with the volcas. It's not "sit on a park bench and play" portable but it's pretty small (while still being very playable), and can be powered by USB, so you could run it off a small battery pack.
I think the general consensus of budget mixers with included FX is that they're not very good. I don't have firsthand experience with the 1202fx, but I'd rather handle the fx separately anyway as I have a lot of pedals. If you want fx, consider looking at one of the Zoom multifx pedals as they're pretty cheap but offer a lot of freedom in what you can do with them.
I have a Dude. I like it and use it with my portable stuff, but if you weren't aware, it's mono only and powered. I were to get another smaller mixer I'd probably go with the Maker Hart Loop Mixer. 5 stereo inputs with a lot more options, and you can stack multiple mixers together should you need more room.
https://www.amazon.com/dp/B01M68UK38/?coliid=I2O0YX9QG0HL2U
I just got the maker hart loop mixer delivered last week. I was gonna get the Volca Mix but read a lot of complaints about it, so ended up on the Maker Hart.
The little I've tried so far is reasonable. Of course it's not going to be the best mixer ever at that price, but it's certainly portable and solid enough. Having 5 stereo inputs is great, too.
https://www.amazon.com/Maker-Hart-LOOP-MIXER-Portable/dp/B01M68UK38
I definitely will! You do the same. The way I did this one was I just ran the tracks playing into a small mixer I have, then a really simple USB interface i got off of amazon that looks like this:
https://www.amazon.com/Sabrent-External-Adapter-Windows-AU-MMSA/dp/B00IRVQ0F8/ref=sr_1_9?ie=UTF8&amp;qid=1511477524&amp;sr=8-9&amp;keywords=usb+audio+interface
this track is really simple so it didn't take much, but if you ran like 6 different channels into some simple interface like that it might muddy it.
I record most of my tracks into either logic or I use the recording feature on my op-1.
I'd really like to get more into abelton, becuase I think it would really help with workflow, but I have such a mental block on learning it. I'm used to the garageband/logic interface setup.
I guess it depends on which volcas you're using and what you mean by silence/return. Like do you want to trigger a whole sequence change or just start the sequence, or send a sequence to them. You can search for their midi charts to see exactly what things you can turn on/off. Depending on how advanced your midi devices are, you could trigger them in all sorts of ways. Basically, it might not be a direct connection, you could have foot switch->midi controller->volcas. It could be done though. Just have to figure out what code does what on the volca, then assign your footswitch to trigger that midi note on a midi controller. I've done things like that with an electronic drum set(that had analog triggers), triggering the drum module that had a midi out.
And that's if you can't just find a full on midi foot controller. they seem a lil pricey
There's also numerous ways you could do that with just audio signal routing. Like using a switch box to mute or unmute the output. (if they're playing on a loop)
I think the cheapest way you could do it would be get an old launch pad or triggerfinger you don't mind stepping on, and (hopefully) assign the correct code for play/stop. Or, use something like the Arturia keystep to send sequences all together and not use the volca's sequencer. lol sorry, I used to do a lot of stuff with midi.
These pencil cases: https://www.amazon.com/gp/product/B00KWN5VZ4/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1
Fit one volca perfectly and are pretty cheap
Thank you very much for digging that up. You are so nice.
Is the recommended setup here something like: iRig Keys => Computer => iRig Pro Duo => volca?
That seems a bit much. I'm hoping this little female to female usb adapter might fix me up. Right?
Awesome, thank you very much for the suggestion! I found a Xenyx 1002FX for about $50 on some local classifieds. She doesn't have a laptop yet but maybe I'll look at the 502 usb so she can use it when she gets a laptop.
&#x200B;
It might be a noob question but what cord would she need to plug the volca into the mixer? It looks like it would need to be a 1/8 male split to 1/4 left and right like this cord.
i keep them covered up with bartowels when i'm not using them, and i wipe them down with dry microfiber towels like these: http://www.amazon.com/AmazonBasics-Microfiber-Cleaning-Cloth-Pack/dp/B009FUFBTG/ref=sr_1_15?ie=UTF8&amp;qid=1420679472&amp;sr=8-15&amp;keywords=microfiber+towel
i use those to clean everything now, if they don't work dry just get them slightly wet and they'll clean anything.
Something like this
I use Volca Keys with Ableton and I use something similar. Works great!
So this came to a surprise to me, just because I haven't had that much experience with this kind of gear.
Here are my notes:
I don't have enough details, but I think you're connecting your volca (stereo) to a line in (mono) and it's getting messed up because the mixing board is expecting mono.
I figured this out by taking one of my 3.5mm TRS to 6.35 mm TS cable only using the T and it worked fine.
My final solution was to buy a TS 3.5mm to TS 6.35mm cable for each of my volcas and everything works fantastically now.
edit: if you're using a volca sample, which is actually stereo, you'll want to split the TRS to 2x TS and put it into two channels on your mixing board.
I use these for the mono Volcas. Works perfectly!
Here is a really weird option, if you want to get it into your computer for recording, buy 2 usb soundcard things for like $10 each. They look like this: https://www.amazon.ca/gp/product/B0776QBWYB
Then plug each volca into the mic input.
On my mac I just create an audio group with both soundcard mics, so I get a 'stereo' input. Or you could record each track separate.
I am planning on getting a monotron delay cause I think it sounds great with the Volca FM. Currently using an ms-70cdr with the Volca mix and I like it a lot.
Edit: here’s the cable I use to hook my pedal up to the Volca mix aux loop: Hosa CMP-153 3.5 mm TRS to Dual 1/4 inch TS Stereo Breakout Cable, 3 feet
From another newbie, I spent a lot of time weighing strengths and weaknesses of different mixers for the volcas and wound up getting this and I'm really happy with it:
https://www.amazon.com/Maker-Hart-LOOP-MIXER-Portable/dp/B01M68UK38/ref=sr_1_2?ie=UTF8&amp;qid=1543002133&amp;sr=8-2&amp;keywords=loop+mixer+maker+hart
Can do mono and stereo, has a headphone output, cheap, already has all 1/8" jacks so no adapters needed.
I use one of these, which work great and which I got for £6.50:
https://www.amazon.co.uk/dp/B00IRVQ0F8?ref_=Oct_CABSellerC_430548031_0
Also these are the perfect size for volca:
https://www.amazon.com/Vaultz-Locking-Supply-Tactical-VZ00192/dp/B00KWN5VZ4/ref=mp_s_a_1_6?keywords=vaultz+lock+box&amp;qid=1573026601&amp;sr=8-6
Here’s a super simple mixer that will mix up to four inputs down to one. You’ll lose the stereo this way, but it’s a really cheap and easy way to mix your volcas. You’ll also still need an audio interface if you want to record to your computer. But you could get away with a single channel interface. Again, this would mean losing your stereo image.
Amazon Link
Do you have any kind of recording interface? (e.g. Sapphire 2i2) there's tons out there. You need an audio input on your computer to take audio from the headphone out on the volca. The audio interface will serve as this input. Plugging a 3.5mm TRS cable directly into your mic input on your computer is probably not advisable since mic inputs are generally mono.
Sound is not transferred through midi. Midi is simply control information.
P.s. The volca headphone out is 3.5mm stereo (but outputs a mono signal) so you need a cable that has 3.5mm TRS to 1/4 inch TS
Like these: http://www.amazon.com/HOSA-CMP-110-Mono-Interconnect-3-5mm/dp/B000068O3D?th=0
Alternatively, some people use these:
http://www.amazon.com/Hosa-CMP159-Stereo-Breakout-10-Feet/dp/B005HGM1D6
You could make your own 'passive summing mixer' if you aren't scared of soldering a little. Alternatively there is this http://www.amazon.com/Behringer-MICROMIX-MX400-4-Channel-Mixer/dp/B000KGYAYQ/ref=sr_1_10?ie=UTF8&amp;qid=1393752272&amp;sr=8-10&amp;keywords=behringer+mixer
Here. if you want stereo (i.e. for pan) you'll need to use two channels.
I just plug one channel into my mixer and leave the other unplugged.
http://www.amazon.com/gp/product/B000068O3C?psc=1&amp;redirect=true&amp;ref_=oh_aui_detailpage_o02_s00
Each Volca comes with a stereo 3.5mm cable. Plug one into the sync out of one into the sync in of the other. You'll then need a mixer to hook the headphone out to for each Volca.
Here's a cheap mixer, and you'll need one of these cables for the Bass, and one of these cables for the Sample.
I opted for the $59 5-channel Hart mixer instead.
Behringer Micromix
I have used these for the mono Volcas.
https://www.gear4music.com/G4M/Minijack-Jack-Cable-1m/108P
For the stereo Volcas these worked.
https://www.amazon.ca/Hosa-CMP159-Stereo-Breakout-10-Feet/dp/B005HGM1D6
The Hosa cables will work but you end up only plugging one of the 1/4 cables in. I found the mono cables to be more tidy.