Synth Shop

"Synthesizer preservation via restoration and sampling."

The Web SynthArk

Vintage Synths


Most of our synth stock is no longer for sale (we are using them to design the MIDI programmers), but we still have a wide assortment of vintage synth memory cards, along with parts and keys in stock. Contact us to purchase or use the Paypal buttons below.

Yamaha GS1 and GS2 Memory Mod

The memory strip readers on the GS1 and GS2 are notorious for leaky caps, which destroy the traces on the board and several NLA (No Longer Available) ICs. So, unless the cap leakage is caught soon enough, most reader repairs are not trivial. Our memory mod replaces the volatile memory with a larger EEPROM, containing all 3 preset library volumes and most of the diagnostic presets.

GS2 ModGS1/GS2 memory mod (with GS2 preset library): $256

Note: Installing the memory mod requires opening the GS and swapping the RAM IC, along with drilling a hole in the faceplate (or replacing the card reader with an insert) to accommodate the bank selection knob, which should performed by a qualified technician.

Note: The GS-1 requires two memory mod daughter boards, while the GS-2 only requires a one. The GS-1 will not be able to mix presets, since the card reader does not function with the memory mod. However, we can preload preset mixes upon request (additional fee will apply).

We also offer GS2 memory strips ($8/ea) and samples of each preset (download demo).  Samples are in WAV format with presets for most common sample players (Logic EXS24, Kontakt, Reason NN-XT, MachFive, SFZ).   The full sample library can be purchased from our sample store.

Memory Cards

We currently have memory cards/cartridges available for Casio, Elka, Kawai, Korg, Peavey, Roland, SIEL/Suzuki, Yamaha.


VZ RC-100VZ RC-100 (factory) ROM card: $64
VZ RC-100VZ RC-120 (Tokio Collection) ROM card: $128
VZ RC-100VZ RC-130 (European Collection) ROM card: $128
VZ RC-100VZ RC-140 (Hi-Powered Collection) ROM card: $128


EK44 RAMEK44 RAM Cartridge: $128


K3 RC-2 RAMK3 RC-2 RAM Cartridge: $128
K3 B-25 RAMK3 B-25 (4 banks) RAM Cartridge ($256)
K1 A1-01 ROMK1 A1-01 ROM card: $64


Note: The 707, DS-8, and M3R use the same RAM card as the Wavestation.

M303 ROMM3R Valhala-M303 ROM card: $64
WPC-14 RAMWavestation WPC-14 (Analog and VS) RAM card: $64


Note: Roland M-256 card is compatible with Peavey synths.

DPM3 Edition 2 ROM cardDPM3 Edition 2 ROM card: $64
DPM SI Edition 2 ROM cardDPM3 Edition 2 ROM card: $64


M-64C RAMM-64C RAM cartridge: $128 (compatible with Super Jupiter (MKS-80), Super JX (MKS-70, JX-10), Alpha Juno-2)
M-256D RAMM-256D RAM card: $64 (compatible with D-5, D-10, D-20, D-50, D-110, D-550 and probably most JV/JD family synths)

Note: Roland M-64C cartridge currently contains JX sound back-ups, but can be reformatted.


SX-500 RAMEX-80/SX-500 RAM cartridge: $128


DX7II ROM cardDX7II ROM card: $64
MCD32 RAM cardMCD32 RAM card: $64 (compatible with B200, SY22, SY35, SY55, TG33, TG55, TQ5, V50, YS100, YS200)
SY35 VC3501 ROM cardSY35 VC3501 (Pop-Standards) ROM card: $128

Vintage Synth Parts

For part availability and pricing information, please contact us with a description of the part needed. We have parts in stock for the following synths:

  • Casio: CZ-101, CZ-230, CZ-1000, CZ-3000, CZ-5000, CZ-1
  • Elka: EK44
  • Ensoniq: KT-88, VFX-SD
  • Kawai: K1, K5, K5m, KC10
  • Korg: DS-8, DSS-1, DW-6000, DW-8000, EX-8000, Poly61, Poly800, Poly800II
  • Moog: Polymoog
  • Peavey: Spectrum Synth
  • Roland: A-90, Alpha Juno-1, Alpha Juno-2, D-5, D-10, D-110, D-20, Juno-106, HS-60, JX-8P, JX-10, MKS-100, S-10, S-220, S-550, U-110, U-20, U-220, W-30
  • Yamaha: DX21, DX7IID, GS1, GS2, TX16W, TX-816, V50

Vintage Synth Keys

We have keys (sharp key: $8, natural key: $16, top key: $32) in stock for the following synths (contact us for key availability):

  • Akai: AX-60, X-7000
  • ARP: 2500, 2600, Axxe MK1, Explorer, Odyssey, Omni, Pro Soloist, Quadra, Quartet
  • Casio: CT-655, CZ1000, CZ3000, CZ5000
  • Crumar: Performer, Trilogy
  • EML: 100, 101
  • Emu: Emulator III
  • Kawai: K5, SX-210, SX-240
  • Korg: DSS-1, DW-6000, DW-8000, Mono/Poly, PolySix, Poly-61, Poly800, RK-100, 01/W, i2, i3, i30, M1, Oasys, T2, T3, Trinity, Trinity Pro, Triton Extreme/Pro/Studio, Wavestation, Z1
  • M-Audio: KeyStudio, KeyStation, KeyRig
  • Moog: Memorymoog, Micromoog, Minimoog, Minitmoog, Polymoog, Prodigy, Satellite, Sonic 6
  • Oberheim: 2/4/8-Voice, OB-1, OB-8, OB-SX, OB-X, OB-Xa
  • Octave: Cat
  • PPG: Wave 2.2
  • Roland: A-50, D-50, EP-3, EP-5, HP-60, HP-70, Juno-2, JX-8P, JX-10, KR-33, MKB-200, S-10, S-50, SK-7
  • Sequential Circuits: Prelude, Pro-One, Prophet 5, Prophet 10, Multi-Trak, Prophet 600, Six-Trak
  • SIEL: Cruise, Mono, Orchestra, Orchestra2, OR-400, Trilogy
  • Yamaha: DX7, DX7IIfd, DX7S, EX5, Motif 6/7/ES6/ES7, PF-10, SY-77, SY-85, SY-99