Yamaha DX-21 with Music Sheet Stand

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"The Yamaha DX-21 FM digital synth makes for a stellar, retro-synth performance piece, as well as a groovin' vintage(ish) practice/jam unit. This synth is the most versatile of the 4-operator family of Yamaha's DX synth line [edit: or the DX11? You can find the user manuals here: http://www.yamaha.co.jp/manual/english/ and compare]. The keyboard isn't touch sensitive, but the sounds can have velocity values if played from a touch-sensitive keyboard. If you spend the time, you can come up with some pretty interesting digital synths and effects if you are wiling to push some buttons and experiment with the programming. Layering the same sound with itself and increasing the dual detune value can make the DX21 sound much fatter than the DX7 for synth, string, and pad sounds. The split function is variable and can be quite useful for performers.

Features
This synth board features a 32 Performance Memory System, programmable with data on play modes, key shift, detune and pitch bend. It will automatically recall these real-time performance parameters as well as the voice or combination of voices. Instead of VCOs, VCAs, and VCFs, the DX21 uses "operators" (a digital sine wave generator combined with an envelope generator) to produce sound that can be used alone or in combination with other operators. It has 32 RAM (Random Access Memory) voice memories, organized in two banks of 16 voice selector keys. There are 128 pre-programmed voices permanently stored in internal ROM (Read Only) memory. Organized into groups of 8, these voices can be loaded individually or in groups into the 32-voice RAM memory. Two FM Tone Generators allow voices to be selected three ways: Single, Dual, or Split play modes. A broad range of MIDI functions make the DX21 exceptionally useful in virtually any MIDI system application. A built in cassette interface allows an unlimited number of voices to be programmed and stored on cassette tape. Cassette voices can then be loaded into RAM memory when needed.

Specifications

Keyboard: 61 keys, C1 - C6
Sound Source: FM Tone Generators: 4 operators x 2 (A,B), 8 Algorithms
Polyphonic: 8 notes (Single), 4 notes (Dual), 4 + 4 notes (Split)
Monophonic: 1 note (Single, Dual), 1 + 1 note (Split)
Internal Memory: 128 ROM voice memory, 32 RAM voice memory, 32 RAM performance memory
Controls: Pitch Bend Wheel, Modulation Wheel, Volume, Balance, Data Entry
Displays: LCD (16 characters x 2 lines)
Connecting Terminals: Output Mix/A, Output B, Phones, Cassette
Control Terminals: Footswitch (Sustain, Portamento), Foot Controller (Volume), MIDI (In, Out, Thru)
Dimensions: 909(w) x 82(h) x 270(d) mm, 35.8(w) x 3.2(h) x 10.6(d) inches
Weight: 8 kg (17.6 lbs)
United States and Canada: 120 V, 50/60 Hz
General Models: 220 - 240 V, 50 Hz
Power Consumption: 7 W"

Info page on Yamaha here.