Audio Proz Service and Sales


Marshall 9005

Audio Proz Inv #: 27842

4-space rack design Stereo power amp, full TUBE design, Audio Pro modified. Designed by Marshall the Guitar amp co. Dual EL 34, converted to home audio quality hifi amp. Ruggedized, fresh tubes, call for details.

$ 780  Contact Us  

Sherwood HP 1000 Integrated Amp

Audio Proz Inv #: 71830

Silver face with wood side panels unit in excellent cosmetic condition with fantastic build quality like phase linear and old school design. Front panel features: Phono LVL, L+R dB/Watt Meters with range attenuator, speaker selection-off/ARS/A/B/A+B, Mode switch-L/RSTR/Reverse/Mono, Bass/Treb/Mid/Vol/Loudness, Dubbing/Phono 1+2/Tuner/Aux 1+2/ Tape 1+2 Monitor/4-ch Adapter/High+Low Filter/Loudness contour/Tone Def/-20dB Mute, 1/4 " headphone, 1/4" Dub In/Out, 2 speaker system. In-outs on back panel to install EQ and other processors, 4 channel I/O, 6 AC outlets, 3SW/3 UNSW Modified updates to power supply, ac switch and amp module. New relay modified use RCA jumpers for connector/updated phone in-outs (RFI protection), lower noise IC. Completely cleaned and serviced by audio pro. #9 Condition 

$ 660  Contact Us  

QSC PLX1202

Audio Proz Inv #: 33198

Lightweight switching pwr supply design, road case available, please inquire!

$ 550  Contact Us  

MR-1240 power amplifier SN 6139th

Audio Proz Inv #: 41463

12 channel - 6 zone - 35 watt per channel

$ 499  Contact Us  

Luxman L-3

Audio Proz Inv #: 71696

Integrated Amp, Silver face, Champagne body and Knobs, has 1 phono, 1 tuner, 1 aux, 2 tape loops, low noise/better thermal stable differential transistors for amplifier board, RFI suppressor on phono in and other jacks. All cleaned and serviced, minor P.S. ground change for improved lower noise, #9 Condition

$ 480  Contact Us  


If you are having trouble finding parts, enter the name into our search bar at the top of the page. Please be aware there is a minimum $4-$6 to ship any part. International orders will be $14-$16 to ship for anything larger than an envelope. Shipping costs are non negotiable, so please, PLEASE do not ask for a part, or for us to search for, or quantify a part if you cannot pay for the shipping.


QSC PLX1602

Audio Proz Inv #: 33200

Step-up rail voltage design for high powered use, actually not a modern digital amplifier, lightweight amp, very super reliable design, Condition #8 Low use rental

$ 480  Contact Us  

Yorkville AudioPro 3000

Audio Proz Inv #: 52178

450 watts per channel (600 watts at 4 ohm), double rack space unit 16" deep. Side fan. 1/4" and XLR inputs, banana outputs. As new, shop demo unit.

$ 480  Contact Us  

Mackie M2600

Audio Proz Inv #: 64087

Power amp. 850x2 @4 Ohms. 3 space rack mount. Selectable crossover, (60Hz,90Hz,120Hz) thru/output XLR. 1/4" and XLR inputs. Includes special hi current 20 amp AC cord. Speakon and Banana outputs. Low use unit cleaned and tested #9 condition.

$ 448  Contact Us  

QSC PLX-1202

Audio Proz Inv #: 33199

Lightweight, switching mode amplifier, 221b

$ 440  Contact Us  

QSC RMX1850HD

Audio Proz Inv #: 61450

2-Channel full-featured stereo power Amplifier; includes level controls, EQ and limiter switches on back panel, Speak-On cables, and banana plugs. Extremely low use amplifier (occasional rental)

$ 440  Contact Us  

QSC RMX 1850 HD

Audio Proz Inv #: 70731

Power ratings 350W - 8ohm, 600W - 4ohm, 900W - 2ohm, 1800W bridged 4 ohms. Barrier Strip, XLR and 1/4" input jacks. Speakon and binding post outputs. Has full features for bridging and soft limiting. Virtually no use time. Set proper bias and cleaned controls. Conditions #9.

$ 428  Contact Us  


We keep our database up to date with almost 10,000 items in stock. If you see a part number and a price, we have that item in stock.


Yorkville AP2020

Audio Proz Inv #: 61483

audiophile grade amplifier, super low noise, 2 rack space amp, old school super rugged design, level controls, bridging, function lights, XLR and phone in, Speakon output, low use, all checked, perfect, needs face clean, #9 condition

$ 400  Contact Us  

Yamaha AX-700u

Audio Proz Inv #: 73038

Black face, CD tuner, Aux Aux tape 1/2, DAT input, 110W per channel, External Processor Loop Send/Receive, Very high quality design, High quality low noise phono, Variable Loudness, Nice EQ, Nice Reliable design, Minor board re-soldering, All serviced & cleaned, Modified speaker relay, Mute switch is by design a little stickier.

$ 400  Contact Us  

Peavey KB40

Audio Proz Inv #: 60364

New horn tweeter installed, combo amp for keys, has pre out / power amp in, internal limiter, discreet amp design, 2 way with 12 inch driver and horn for excellent presence, super loud crank, also eq patch in/out, unit could be altered easily with different eq, damped box, woofer cone, little dusty, light rust, low use time, very clean internals, #8+

$ 400  Contact Us  

Adcom GFA-545

Audio Proz Inv #: 73236

High current power amp. RCA L/R Input, L/R Speaker outputs. Dual Power Supply. Basic but high quality design. Very reliable unit with super high quality parts & Construction. Excellent star grounding on filter caps. Better built unit, excellent quality capacitors and board layout. SN: AD11317-726. Cosmetically & Functionally excellent. Some minor scratches/ small marks on unit but mostly very clean. Fully tested & Cleaned. Works perfectly. #9- condition

$ 388  Contact Us  

GLI Pro GA-75

Audio Proz Inv #: 37353

Stereo power amp, 3-space w/VU meters. Awesome very well built high current 100 watt amp with meters and level controls, 2 speaker switches. *** Modified power supply, Improved upgrade audiophile grounding done***. 

$ 380  Contact Us  

Scott Stereomaster LK-60

Audio Proz Inv #: 50414

Solid state stereo amplifiers Scott kit, Tape, Phono, Tuner, Aux, Input Selections, bass, treble, balance, controls, wood case #8+ unit all knobs nice, all phono, input caps and transistor upgraded, unit probably could be upgraded with new EQ board capacitor

$ 380  Contact Us  


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 almost 10,000 items in stock. If you see a part number and a price, we have that item in stock. 

Customers outside of the US, please note that international shipping can be costly (US Post $16 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.


ART SLA- 2

Audio Proz Inv #: 62443

Stereo Power Amp, 200 watt per channel - Single rack space  Low noise, high current design, Modified with special internal shield for super low noise, also special bias check for stability. rear cooling fan, XLR & phone inputs. (fan can be made quieter) As new warranty with Original Box packing, (used 1-2 rental) #9-

$ 368  Contact Us  

Marantz MA 600 DC Amplifier

Audio Proz Inv #: 63694

Vintage Silver Face design, (2) Phono (1) Aux (1) tuner (2) tape loops 5 band EQ & defeat switch, LED power meters, Low use machine. Audio Pro - improved, power supply grounding. Hi Quality circuit design, Low use, all service done. #9 condition 

$ 360  Contact Us  

Crate Stealth-50 GT-50

Audio Proz Inv #: 60360

With 16ohm Clestion Vintage 30 speaker, impedance speaker matching switch gives different tone qualities. Spring reverb. 4 6V6 Amplifier, excellent, 4 new Sovtek 6V6 tubes installed, 2 channel IN, multiband EQ, FX send loop, footswitch. 8/10 condition cleaned, calibrated, major super-ruggedization, doubled upon grounds, tested reverb/speaker. new fuse holder.

$ 348  Contact Us  

Onkyo A-10

Audio Proz Inv #: 55726

Integrated stereo amplifier. MC/Phono1/Phono2/Tuner/Aux inputs. Speaker A/B/C/A+B/A+C. Bass, Treble, Balance, Volume controls. Dubbing, Monitor, Subsonic, High Cut, Mode, Loudness, Muting features. 1/4 inch phones jack on face. Silverface unit. 8+/10 condition. Some lettering worn off and some dust inside.

$ 340  Contact Us  

Gallein-Krueger 400 RB

Audio Proz Inv #: 56215

200 watt bass amp with power cable. 1/4" input with -10db button. Volume/ 3 voicing filters/ treble, hi-mid, lo-mid, bass tone/ boost level with footswitch jack/ master volume/ 2 1/4" speaker outs 4 ohm/ direct out/ send, return on back. AP mod improved filtering capacitors grounds. Black with grey control panel. Minor marks around edges, covers. Low use, fully serviced. Has AC cord.  No rack ears (carry strap one side). 8+/10 condition.

$ 336  Contact Us  

Gli Model A-6600

Audio Proz Inv #: 50587

High current control amplifier, 400 Watt, 60 Watt R.M.S. output, upgraded ground path for lower noise, replaced phono opamp with upgraded burrbrown (OPA #2604AP) for improved noise floor, REV3 # 10 NEW in box, with VU meters

$ 328  Contact Us  


APT 1 Amplifier Upgrades and Repairs Technical Information: Read more about it here.


GLI A-6600 Mod Rev III

Audio Proz Inv #: 56295

Integrated amp. Audiophile grade design with remote for volume input switching. Superior all metal chassis quality controls. High current speaker relays. A.P. modified power supply, phono pre, and RFI modifications. sn 9400129 New condition, 1 time demo from display. With VU meters

$ 328  Contact Us  

AKAI AM-U03

Audio Proz Inv #: 64216

DC Stereo Integrated Amplifier. Installed R.F.I input protection caps on phono input. Unit has updated drive STK I.C. Unit has excellent designs of circuit board foils for ground shielding and reduced audio signal crosstalk. Complete service, updated relay. Unit has seen very low use time, unit has dual mono powersupply. High quality phono design. Tested, fully functional. Light signs of use on faceplate. Top & Bottom panels in excellent condition. Use 18 gauge wire for audio out. #8+ condition.

$ 328  Contact Us