Alesis QS7.1

Alesis QS7.1 Image

The QS7.1 is a 64 Voice Expandable Synthesizer based on the QS6.1 and QS7 QuadraSynths. It's basically the same as the QS6.1 but has a 72-note keyboard and additional audio outs. But compared to the older QS7, it offers up a much needed larger LCD display screen and a few more direct access buttons to certain edit function and parameters. It uses digital ROM samples (16MB) of sounds containing a library of 640 programs and 500 multitimbral mixes. Really amazing pianos, orchestral sounds as well as vintage synth sounds, strings, brass, winds, guitars, drums, percussion loops and groove patterns can all be found here.

The QS7.1 features 64 multitimbral parts over 16 MIDI channels. That's a lot. And since it's 64 voices polyphonic, you can arrange some pretty complex and complete music, from full orchestras to trance dance tracks, beats and sfx heaven! The keyboard can be split into 16-zones! Control the volume, panning, transposition, effects level and more of each channel independently. Four on-board edit/control sliders are assignable to most modulation parameters. Onboard multi-effects based on the QuadraVerb 2 include reverb, chorus, distortion, EQ, delay, rotary speaker simulation and more. These are on four independent busses so it's like having four FX units!

Powerful MIDI implementation suits the QS7.1 for any studio situation. But it has more! It can connect to your Mac or PC using its RS422 or RS232 ports. The QS7.1 comes with a CD-rom (Mac/PC) with Alesis' Sound Bridge and FreeLoader applications, plus programs for sequencing, editor/librarians, notation, extra samples, programs and mixes, sample sequences, demos and more. Either way you choose to use the QS7.1 it is a truly professional yet affordable versatile synth for the creative player/composer who needs a wider keyboard. For the flagship model, look no further than the QS8.1 with 88-weighted keys with piano style hammer-action.

Lookup Alesis QS7.1 Prices

The link above will take you to an eBay search for this synth to see active listings with more images, specs and information. If you don't find it there, try looking in our forum marketplace. Our marketplace gets thousands of visits every week so make sure to check back often if you want to buy or sell a synth.

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Are you looking to buy or sell a Alesis QS7.1? Post an ad in Gear For Sale or a request in Gear Wanted. For spare parts and repair services check out Gear Services & Other Goods. Our forums also has a Buyer’s Guide section where you can ask for advice on buying synthesizers.

6 Visitor comments
November 8, 2013 @ 2:57 pm
This is one POWERFUL and FUN keyboard. Got mine for just over $300 with shipping. Had a QS 6.1...Absolutely LOVED it!!...Got the 7.1 for the extra keys. The Emerson sounds are GREAT. Cards are a benefit for more sounds. Sliders are a great feature as well. So far, the only down side is the need to scroll through the sounds to get to the ones you want as there's no numeric keypad to allow you to do this. BTW, did I mention that I LOVE this thing? Would be on my list of 'desert island must-haves'.
February 26, 2013 @ 8:13 am
This product has "76" keys, NOT "72". I find the keyboard action as exceptional - note: the product description on the Alesis website states "76-note semi-weighted keyboard". I find that the play and feel of the keys are higher quality compared to newer MIDI controllers available today. IMO, the keys/keybed are actually better (higher quality, better feel) than my Korg Triton Pro 76. The "Vintage Keyboards" and "Vintage Synthesizers" QCards provide excellent sound quality and selection

"absolute magic", "vastly underrated", "powerful", "killer sounds" - earlier comments worthy of repeating.
June 16, 2012 @ 3:29 pm
Got one used for $240 today. The last synth I owned was a Yamaha DX-100. I haven't even gone through all the presets and I found several I love. Can't wait to start tweaking. Since I was looking for a bargain, this fit the bill for me.
November 8, 2011 @ 1:55 am
The Alesis QS7.1 has a really impressive soundset! A creative Synth, for the creative recording musician. The only limit is ones imagination. Mix Mode has some cool combos, and the pianos can be quite realistic with the right setting. Interesting how other Synths from 99' couldn't quite compare piano-wise. Way to go Alesis! The Brass section in both Program and Mix Mode have awesome realism and feel: the Sax, Violin, Trumpets and Classics are all quite cool! For me, the only questionable thing is the Action: unless I need to adjust a setting, I found it far less expressive than my EX5.
Arthur "Aardcore" Gardner
September 21, 2011 @ 6:34 pm
Because a 6.1 was too small and an 8.1 is far out of reach, the 7.1 is right inbetween but doesn't leave you there, FAR from it. This synth is absolute magic! A vastly underrated piece of equipment and under the right circumstances and majesty can be a powerful presence. For those of you seeking one of these out, don't blame the owners if they refuse to give them up; I know I'd be torn into a place between a rock and a hard place if I had to, but if you get one? Worth it! I'd looked for one, hoped for one, FOR MONTHS and one finally showed up. Many hours have been spent in joyous bliss.
VSE Rating


User Rating

Rated 3.1 (156 Votes)

  • Check Price
  • The link above will take you to an eBay search for this synth to see active listings. If you don't find it there, try looking in our forum marketplace or post a wanted classified.
  • Demos & Media
  • Audio Clip 1 - Here are a bunch of demo patches from the QS7 - displaying the QS-synth's wide range of excellent contemporary, acoustic, and electronic synth sounds & textures. From the Future Music CD, issue 51.

    Audio Clip 2 - Onboard demo of the QS6.1 and its cool sounds.

    Manual - Alesis have made manuals and program charts for many of their products available on-line, for free download as .PDF files.

  • Specifications
  • Polyphony - 64 Voices (with dynamic voice allocation)
  • Oscillators - QS Composite Synthesis (16 Bit Linear 48kHz Sample ROM): 16 MB, expandable to 32 MB via PCMCIA Expansion Card Slots
  • LFO - 3 LFO's
  • Filter - 64: 1 Sweepable Lowpass Filter per voice
  • Effects - QuadraSynth 2 four-Bus Parallel Matrix Effects: reverb, chorus, distortion, EQ, delay, rotary speaker simulation and more.
  • Keyboard - 76 semi-weighted keys (velocity, release velocity, aftertouch sensitive)
  • Memory - Programs: 512 preset, 128 user; Mix Mode: 400 preset, 100 user.
    Expandable using QCards or RAM Cards via 2 PCMCIA expansion card slots
  • Control - MIDI IN, OUT, THRU (64 Part multitimbral across 16 MIDI channels); RS422 and RS232 serial protocols, Mac and PC compatible
  • Date Produced - 1999

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