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Processors
( 237 Processors sorted by Price High to Low.)
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Deltalab CE-1700 Compu Effectron
# 28137
Multi Function Delay Chorus Echo Flange, unit will not respond to front panel commands, unit is for parts or repair - call for details
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Behringer Edison EX1
# 29339
High-quality virtual stereo 3D processor. LED display for degree of correlation from 0° to 180°. XLR and 1/4 inch TRS connectors. Stereo Spread, LMF Spread, Balance, Center Distance and Output Gain controls. **Modified - contact us for details** Out of production. Read our Edison EX1 review in Educational section. (V)
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Behringer EX1200
# 54002
Ultrabass Pro, Bad compressor IC.
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Electrix Repeater with mods
# 33152
With modifications, modest used time; see here for details
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Electrix Repeater with mods
# 33153
With modifications, modest used time; see here for details.

Please note: only specific and slightly rare "CFC" memory cards can be used with the Repeater. The power supply is also rare, and at times only an expensive "industrial grade" power adapter ($100+) may still be available. Because of this, getting a whole package together can be expensive. The modification, CFC card, and power supply might total $300+.
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Re: International Shipping: We ship internationally often and have yet to encounter a problem or complaint. We are very careful to test the equipment before it’s packed and then to double box the machine with added protection when needed for front panels, etc. We are not amateurs or an ebay store; we know these machines very well and know what it takes to get them to you safely. We use USPS priority internationally which seems to be the cheapest. If you prefer another carrier (you should know who delivers to your area reliably) please let us know. Also please be aware of any tariffs that you may be responsible for upon pick up on your end. International shipping may be expensive but we will make sure it is not a headache on top of the cost. PLEASE NOTE THAT SHIPPING INTERNATIONALLY WILL BE A MINIMUM OF $24 EVEN FOR SMALL PARTS.
Electrix MoFX
# 34743
Digital effects processor, live time knobs, 2. 5 sec ping pong echos. With manual, distortion, flange, tremelo, delay, chorus, Amazing effects!! Very live time, Playable!!! (V)
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Behringer V-Amp 2
# 34830
Guitar preamp processor
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Behringer V-Amp 2
# 34860
Guitar modeling amp
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Electrix MoFX
# 36178
Digital effects processor, live time knobs, 2. 5 sec ping pong echos. With manual, distortion, flange, tremelo, delay, chorus, Amazing effects!! Very live time, Playable!!! (V)
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ADA MP1 Tube Preamp (Rev 6)
# 40272
#8+ Condition, Excellent Audio, No rack Scratches, New Front Jack, Tube EQ Mod, Battery LED Mod, Battery Supply Mod, Audio Circuit Low Noise, 5534 op amp mod, upgrade k246 FET, super low noise mod. Very rugged front panel jack, jack only works as guitar input, #8 condition, excellent audio, no rack scratches (possibly sold unit see our other listings)
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DBX 3BX II
# 40561
Three band dynamic range expander. Rack ears in perfect condition. Unit in excellent cosmetic condition, completely cleaned, serviced and calibrated. Condition: 9
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Yamaha DSP-1 Digital Soundfield Processor
# 63889
Outboard Pre-processor, 16 sound effect programs including Dolby surround. Tested, controls & switches cleaned. Good condition, 2 small scratch on top face panel. Amazing quality reverb ! (needs remote control to access all functioins- may be made available)
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Next Super Bass 4.4
# 52962
Bought as new. #9 Condition.
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Rocktron Pro Chorus service
# 50114
We can do full servicing and updates for this device. We calibrate carefully, check all parts, and update for lower noise and more reliable operation. Average, typical repair with modification is $88 to $132 including all parts and return shipping. Please call for details.
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DBX 150
# 62621
Type 1 noise reduction system. (4) CA 3038 IC ($8 each) faceplate #8+ ICs, switches, buttons, etc, 7- condition CALL
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Local customers, please do not come to the shop without calling ahead first - (617) 926-8020 - for an appointment, so that we can more efficiently help you with your equipment or sound recording needs. We keep our database up to date with over 10,000 items in stock.

If you see a part number and a price, we have that item in stock.

Customers outside of the U.S., please note that international shipping can be costly (US Post $24 minimum - up to 8oz or 226g). We are glad to combine orders to reduce shipping costs. Take a look at our shipping policies for more information and estimates of prices and shipping time.
Digitech Studio Vocalist
# 44505
Mic and Line inputs. One octave keyboard style button array on face. Excellent tracking! Encoder code for editing factory and user programs. Great sounding harmonies and easy to use interface! Excellent #9 condition.
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Sony HR-MP5 Multi Processor
# 44860
Very powerful effects processor! Comes with custom power supply unit, 1/4" stereo ins/outs, MIDI in/out, digital jog dial controlled menus. This unit is tested and fully functional, but the display is dim due to problem backlight. As of 2024, battery replaced, display worked briefly without backlight then completely stopped. Unit powers up, display is currently not working at all, sound passes through it and effects work as well as effect selection. Original box and packaging Working unit with non-working display. #8 condition
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DBX 902
# 58042
Unknown operational condition, value for parts and controls to be salvaged. Condition #8
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DBX 1BX- II
# 55826
1 band dynamic range expander, slider controls, a single space rack mount. Expansion, transition, pre, post, bypass. Has silver rack ears, excellent for phono playback enhancement, reduces noise for tape, excellent calibration. Original box and packing, two minor scratches on top cover. 9+ condition.
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Electrix Warpfactory
# 54210
2RU stand alone vocoder. Midi I/O. Input gain, gender, Q, order, robot pitch, noise mix, effect mix, bypass, source kill. #9
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Phase Linear 1000
# 55552
Autocorrelator Noise Reduction System. Dynamic range recovery system. Peak Unlimiter/Down Expander, Auto Correlator, Low Freq Calibration Controls. AP Rev 6 Mod for improved performance, dynamic expansion and recovery. Condition: 9. Contact us for more information.
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Electro Harmonix - Bi-Filter (Dual Analog Filter Processor)
# 39230
Not For Sale
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Electro Harmonix Bi-Filter
# 39489
Brand new Bi-Filter.
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ART Multiverb V1.2
# 53064
In house use only.
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ADA MP-1
# 72125
Guitar Processor. Unit has Rev 6/ Rev 5 Modifications. Engineering Sample. Better Overdrive/ Tube EQ etc. Back panel phone jack is for line level. Unit has high/ low output switch on top cover. Fair amount of rack rash and scratches. Fully functional unit with only some minor cosmetic flaws. #8- Condition
On my website is a clear explanation about ADA MP1 and mods. Without a doubt the 3 tube mod is a waste of time and money and actually will make the ADA MP1 run incorrectly. This unit operates on the principal that the FETs control the tube voltage and carefully inject distortions into the cathode of the tube and also, the programming on the front panel changes plate voltages to tubes! A remarkably clever design! Obviously, the people who offer this 3 tube mod and double transformer mod do not understand this circuit or its operations technology and they are misleading concerned players.

The modification that I do actually lessens the tube gain, lowers the noise floor, and adds equalization that is better for todays vintage sound. Players want more versatility in programming usual guitar overdrive effects. The original design is way too screechy metal in its overdriven character for too many programs. My alteration allows a wider range of programming to go from the metal to warm, driven to crank, to a bluesy overdrive whereby the overdrive and equalization controls are calibrated more in the middle range of its programming numbers; i. E. Number 5 on the overdrive is now a nicely driven sound rather than a badly overdriven sound but the ADA MP1 will be still be able to be heavily overdriven on an 8 or 9 setting. These modifications were acceptable to the ADA engineer at the time. In fact, he commented that the electro acoustic sound with my parts change was similar to his thinking too, in that it allows for more flexibility for front panel adjustment for even more guitar tube preamping effects.

I have done this mod for 25 years!! No complaints yet. Please call me directly for more info.
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OUT OF STATE CUSTOMERS:
Contact us if you are interested in purchasing an item.
We prefer PayPal payments.
We only ship to VERIFIED PayPal Addresses
For customers who do not have a PayPal account we also take Credit Card over the phone.
Please be aware that there is a minimum $4-$6 to ship any part.
Joe Meek Pro Channel VC3
# 48394
Microphone preamp, compressor, enhancer. Like new condition with manual and power supply, all cleaned and tested.
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Behringer MX662 Ultralink
# 26643
With manual, 6 channel signal router, 6 in-2 out line mixer, 2 in-6 out line splitter, 6 in-6 out buffer amp, all 1/4" I/Os balanced, 1 rack space, each channel has Level and Balance/Pan, This is the older better built (more rugged) unit.
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Boss ME-10
# 27927
Guitar Multiple Effects (compressor, overdrive/distortion, noise suppression, EQ, Phaser, Flanger, Pitch Shifter, Delay, Stereo Chorus, Stereo Reverb, Effect Loop, Tuner, Midi in/out). Functionally tested OK. Excellent cosmetic and mechanical condition.
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Amek System 9098
# 48664
High performance, solid state design, single channel, one rack space unit. Microphone preamp and equalizer can be used independently. All connections are balanced XLR. Excellent #9+ mint condition, includes manual, original box & packing.
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BSR SE-ONE Spatial Enhancer
# 46870
Very clever phase correction and enhancement device for equalization and fattening. Unit creates a wide and thick stereo enhanced image. RCA in/out. Excellent #9 condition, professionally cleaned, serviced, tested.
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