Audio Proz Service and Sales


Revox A77

Audio Proz Inv #: 60134

Recording Amplifier #1077 705. Missing two trimmers, salvage from previous board, good condition, might need cap change out, #8 condition.

$ 28  Contact Us  

QSC power switch

Audio Proz Inv #: 49798

Part JC1-A3-J C-97. 20amp, 250v, 2"x2"x.5", gray color. New old stock. Three pieces available.

$ 16  Contact Us  

QSC Audio PL-1 octal limiter

Audio Proz Inv #: 46381

8 pin octal limiter module. Very good #8 condition.

$ 18  Contact Us  

Pioneer Spec 4

Audio Proz Inv #: 52547

Intact but in #7 condition. Parts available: (2) meters-$48 ea, (1) face with handles-, minor obvious scratches  (Call for pricing) (1) good amp board-$200, (2) filter caps-$30 ea, (2) Rear "bumpers"  (SOLD). 

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Pioneer SA-9100

Audio Proz Inv #: 57314

Balance control 200k ohm. Substitute for balance control, High quality ALPS. Detented, click increments. Cleaned, lubed, exercised. Requires new holes drilled. Easy to mount. #10 Condition (New).

$ 16  Contact Us  


Need your guitar or bass amp tuned up? We are now doing repairs, upgrades, and modifications to all types of guitar amps. Orange, Mesa Boogie, Fender, Marshall, Hughes and Kettner, Peavey, Ampeg, Gibson, Silvertone, etc. Read more about it here


Philips 44000uF capacitors 318GEH443U075APA1

Audio Proz Inv #: 49192

Pair of capacitors. 318GEH443U075APA1, 44000uF, 75vDC 95v surge, 85 degree C max ambient.

$ 40  Contact Us  

Phase Linear 700B

Audio Proz Inv #: 57858

VU Meter, clean face. #8

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Phase Linear 700B

Audio Proz Inv #: 59568

(2) Interior rotary switches $12. (1) power switch, probably for 700B $14. Please send pictures of your unit/parts to ensure a proper match!! 8+/10 condition, knob controls have typical slight oxidation.

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Phase Linear 700 Meter

Audio Proz Inv #: 57883

For cosmetic use, very minor unnoticeable finger wear, old version silver scale, #7

Vince notes that 4 meter variations were used in this model, please show us a picture of your meter to see if we can match it.

$ 14  Contact Us  

Phase Linear

Audio Proz Inv #: 58508

55 OHM. For Phase Linear 700B amp. 4 1/2 x 4 inch silver face. 8+/10 condition (very minor unnoticed scuff. Tested and used).

$ 44  Contact Us  

Phase Linear

Audio Proz Inv #: 58604

(3) Glass Bezel covers for Phase Linear VU Meters. Include a picture of your meter so we can match the cover to you!. 9/10 Very good condition.

$ 12  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.


NAD C272

Audio Proz Inv #: 70701

Power amplifier, 150 watts/channel/8ohm. Unit has an open transformer. but is in good condition cosmetically. Soft clipping circuit on/off switch  2 speaker outputs Inputs: RCA Fixed or variable level. Can be run stereo or mono with bridge switch.

#7 condition due to open transformer.  Please call if interested

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NAD C 370

Audio Proz Inv #: 71585

Integrated amp, amps will not turn on, appears to be low level power supply problem forces unit into protect, amplifier modules seem to be ok. good condition #8

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NAD 3300

Audio Proz Inv #: 27305

Unit is in excellent cosmetic condition. 2 speaker channels, bass EQ selection with sweepable 50Hz, 120Hz, and 250Hz ranges. Sweepable treble control with 3kHz, 6kHz, and 12kHz ranges. Tape copy selection with 1 to 2 and 2 to 1 options. Monitor 1 and 2 selection. Back panel connections, phono in with cartridge type selection. Tunier in, vidio in , DC in, Tape 1 and 2 in/out, main in, pre out. Unit needs many parts to repair amplifier section

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NAD 3140

Audio Proz Inv #: 48736

Intact, good for parts, or can be repaired upon request. Speak EQ's: 45, 70. Infrasonic, mono, low level, loudness, soft clipping, S.L.C. Very good condition. Condition 8

$ 38  Contact Us  

NAD 2400

Audio Proz Inv #: 61304

Rack sides, gray, pair, #9 condition.

$ 38  Contact Us  

NAD 2140

Audio Proz Inv #: 58218

Unit requires major rework. Needs many capacitor replacements and an upgraded board regulator. Most important transistors OK. Face, mechanics OK. Worth transformers and output transitors. Needs service. 7 condition.

$ 48  Contact Us  


We have been selling and repairing professional and consumer audio equipment for over 40 years. (Read some of our customers testimonials here)

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.


Mepco/Electra 1500uF capacitors 905-01-04-018

Audio Proz Inv #: 49194

Pair of caps. 905-01-04-018, 3186DE153U040BMA2, 1500uF, 40vDC 50v surge, 85 degree C max ambient.

$ 22  Contact Us  

Mepco/Electra 15000mFd capacitor

Audio Proz Inv #: 51642

Surplus stock left over from 1980s. Electrolytic, #3110DC153U100, 362-7723, 15000mFd 100wYDC. Five pieces available.

$ 16  Contact Us  

Maxi-Mouse 1/4" input jack part

Audio Proz Inv #: 54089

9 terminal switching 1/4" jack for input, closed frame design. Rare part. Actually 3 versions exist. (show us a picture of yours for us to match). Some creative thinking may be needed to adapt wiring or nut mounting. This is the only solution. Used part. Looks good. (1) Board mount version, sits flat on board, 9 legs available for $16. Condition 8/10.

$ 14  Contact Us  

Marcon Capacitor 68000 UF 50 WV

Audio Proz Inv #: 51589

1990s era. #9 condition.

$ 20  Contact Us  

Marantz wood cabinet 1030

Audio Proz Inv #: 61481

fits 1060 amp series + tuners (105), walnut veneer, has many obvious scratches but appears to be repairable with skim sanding and refinish, but will probably still show slight scuffs, #7 condition

SOLD  Contact Us  

Contact us about similar items or replacement parts.

Marantz Model 15 AMPLIFIER BOARD MODULES

Audio Proz Inv #: 43258

2 AVAILABLE.

$ 30  Contact Us  


All Remotes are now 25% off or Free Shipping!!!  (Reel to Reel remotes excluded).


Marantz 3300 Model or 1200

Audio Proz Inv #: 58993

Volume control. 8 legs like original. 200K value will fit with 50K 100K or 250K use. 9+/10 condition (N.O.S unused).

$ 32  Contact Us  

Magnecord 420-04365 VU Meter

Audio Proz Inv #: 58603

420-04365 VU Meter. 8+/10 condition (minor wear on face).

$ 34  Contact Us