Mackie Onyx 1640 16-Channel Mixer with FirewireAwesome mixer.....6 Aux sends ...great for dub mixing ....I was using this on my iMac running mountain lion with a firewire converter ....can be used on PC and windows too. Just check Mackie website for driver and port compatability. Can be used with loads of DAW's ....I used mine with Abelton.This mixer is is prime as new working condition with only studio use. It is in mint condtion barring one small chip to one pan rotary on channel 10...please see pics. It is barley noticable and in no way affects the function of the pan or the mixer in any way. This mixer has all the functions and firewire connectivity and quality of the Mackie Onyx 1640i mixer with the added bonus of a removable firewire card which you could sell if you are already using an a/d converter like a Focusrite Saffire Pro for example. I am selling this mixer as I am changing my workflow around and working ITB.Grab a great bargain FOR 1/2 THE PRICE OF A NEW MACKIE ONYX 1640i !!!!!!!!!!!!!All sales are final and I require payment within 3 days. No Refunds will be given. Anyone wishing to bid on this unit with no feedback score please contact me first before bidding.Only posting within Australia.If you wish to pick up the mixer that is fine also.......but payment must be made via Paypal first.Any questions please feel free to ask.GOOD LUCK ON YOUR BIDDINGHere are the detailed specs:.......The Mackie Onyx 1640 16-Channel Mixer is a premium 16-channel, 4-bus small-format analog mixer. It features all-new circuitry including 16 boutique-class Onyx mic preamps with 4-band Perkins EQ plus sweepable mids on mic/line channels.Other features include six aux sends with pre/post switches, four stereo line-level inputs, a built-in talkback section for use with internal or external mic, true hardware EQ bypass, and a "Planet-Earth" switching power supply for worldwide use. It's also equipped with individual 48V phantom power switches on all mic inputs, 60mm logarithmic taper faders for smooth, linear fades; balanced direct outs for every channel via DB-25 connections; and selectable instrument inputs on the first two channels, meaning no DI boxes are needed.Onyx mic preampsBecause a great mixer starts with great mic preamps, Mackie invested significant R&D efforts into developing our new flagship Onyx mic preamps. These preamps build upon their already-impressive XDR design to meet or surpass expensive esoteric standalone mic pres in terms of fidelity, headroom and transparency—as well as improved radio frequency (RFI) rejection and wider dynamic range.Perkins eq circuitryWhen it was time for the Onyx EQ section, Mackie turned to veteran audio engineer Cal Perkins to develop their new Perkins EQ circuitry—a "neo classic" 3- and 4-band design based on classic "British EQ" circuitry from mixing desks of the '60s and '70s. Cal devised a way to give Perkins EQ that sweet "British console" sound, but with greater filter control and minimum phase shiftMackie rounded out the Onyx 1220 feature set by answering some common requests from their compact sound mixer customers: adding individual 48v phantom power and balanced direct outputs on every channel; a full Auxiliary section with Pre/Post control; and a new Talkback section with a convenient built-in mic. They even developed a "Planet Earth" switching power supply for worldwide use.Onyx 24/96kHz Firewire I/O CardThe Onyx FireWire Card is a true first. This user-installable 24-bit/96kHz card transforms the Onyx 1220, 1620 and 1640 mixers into fantastic-sounding digital audio interfaces capable of sending up to 18 channels of audio to your Mac or PC — without the need for additional converter boxes or hardware. Thanks to the use of flagship Onyx mic preamps, superior analog circuitry, and class-leading A/D converters, Onyx mixers with FireWire rival the sound quality of dedicated audio interfaces costing many times more. Not to mention the simplicity of plugging in up to 16 microphones and sending them directly from the audio mixer to your computer... and monitoring a stereo mix back through the mixer.Up to 18 channels w/ adjustable sample rateThe Onyx FireWire Card allows you to stream up to 18 channels of 24-bit digital audio to your Mac (OSX 10.3.5 or greater) or PC (Win XP). These show up in your audio software as 16 individual audio inputs, plus a stereo L/R mix. You can also send two channels of audio back from the computer to the sound mixer for monitoring purposes.Audio coming back from the computer is conveniently monitored through the Control Room Source matrix, where it is routed to the Phones, Control Room, or Main Mix outputs. Additionally, you can select the sample rate for the analog-to-digital converters in either the Onyx Control Panel (on the PC) or directly from your audio software (on the Mac — no control panel needed). Sample rate options include 44.1 kHz, 48 kHz, 88.2 kHz, and 96 kHz at 24 bits.A hub of activityThe Onyx FireWire card features two 6-pin FireWire connectors that each supply all 16 channels plus the L/R mix. Having dual connectors allows you to place the Onyx mixer anywhere within a chain of FireWire-equipped devices. You can even daisy-chain two 16-channel Onyx mixers via FireWire and send a whopping 32 mic signals right to your laptop. (PC only; Mac support for mixer chaining coming soon.) This makes for a very high-quality live recording rig that conveniently fits in the back seat of your car.ADJUSTABLE MAIN MIX TRIMThe Onyx FireWire card has a small rotary knob that provides boost and cut for the L/R mix signal being sent to your computer. Since the L/R mix signal is tapped prior to the Main Mix fader, this rotary knob gives you control over the signal level going to your audio software application without affecting your main mix level — a very convenient feature for live recording.Everything you need to get recordingThe CD-ROM included with the Mackie Onyx FireWire card contains all the necessary drivers for PC, plus a software Control Panel. On a Mac, just plug in the FireWire cable and Onyx mixers will immediately show up as a 14x2 or 18x2 Core Audio device.FEATURESOnyx 1640Premium 16-channel/4-bus small-format analog mixer16 new Onyx mic preamps comparable to boutique preamps4-band Perkins EQ with dual sweepable midrange controls provides warm, musical sound2 channels of monitoring from computer via FireWire option card6 aux sends with Pre/Post & Solo switches4 stereo line-level inputs4-bus architecture for flexible sub-grouping of channelsBuilt-in Talkback section for use with internal or external micTrue hardware EQ bypass"Planet-Earth" switching power supply for worldwide useLinear taper 60mm faders with ultrasmooth response on all channelsBalanced direct outs for every channel via DB-25 connectionsSelectable Instrument inputs on first two channels—no DI box neededRotating I/O pod for desktop or rackmount operationFirewire I/O CardUser-installable 24-bit/96kHz FireWire I/O Card for Mackie Onyx Series analog mixersStream 12 or 16 independent channels of audio, plus stereo mix, directly to Mac or PC (12 ch. + mix on 1220; 16 ch. + mix on 1620 and 1640)Monitor stereo L/R mix from computer back through mixer with a single button pressFireWire technology provides monitoring through audio software and plug-ins with no noticeable latencyWorks with any Windows XP ASIO/WDM host (Cakewalk, Cubase, Sonar, Nuendo, Live, Tracktion, etc.) or any compatible Mac OS X Core Audio host (GarageBand, Logic, Cubase, Sonar, Nuendo, Live, Digital Performer, Tracktion, etc.)Now includes the popular Tracktion 2 Audio and MIDI Production Software with Final Mix mastering tools and moreSPECIFICATIONSOnyx 1640 & Firewire CardFirewire I/O CardFrequency Response: +0, —3 dB, 10 Hz to 42 kHz @ 96 kHz sample rate, +0, —1 dB, 10 HZ to 20 kHz @ 44.1 kHz sample rateDistortion (THD + N): < 0.025%, 10 Hz to 40 kHz, +4 dBu input @ 96 kHz sample rate, < 0.015%, 20 Hz to 20 kHz, +4 dBu input @ 96 kHz sample rate, < 0.010%, 20 Hz to 20 kHz, +4 dBu input @ 44.1 kHz sample rateDynamic Range: > 98 dB, 20 Hz to 20 kHz @ 96 kHz sample rate,> 100 dB, 20 Hz to 20 kHz @ 44.1 kHz sample rateMain Mix Trim: +10 dB to —10 dB, unity detentDimensions: Height: 1.3 in/ 32 mm, Width: 8.8 in/ 222 mm, Depth: 3.6 in/ 91 mmWeight: 8.3 oz/ 235 g