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Noise Reduction
( 92 Noise Reduction sorted by Price High to Low.)
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DBX DUAL 155
# 8130
2 sets rack. Cleaned all front panel switches, play and rec. Calibrated controls, calibrated for 0 dB. Checked calibration . 5 dB difference max between channels. Checked crosstalk, 3 mv internal between record in and play out max. Mint Condition.
$ 550
Contact
Phase Linear 1000
# 56265
Auto correlator noise reduction system with Rev 6 modifications, low noise TLO75 IC update, some capacitor update. Dynamic range recovery system. Wood case, vintage knobs. Low frequency calibration. 9/10 excellent condition.
$ 388
Contact
DBX 158
# 22598
8-channel Noise reduction System! Has 8 DBX 410 cards. Mint condition.
$ 360
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Presonus GTX44
# 42380
4-chan noise gate/expander for pro use. Balanced XLR in/out with unbalanced 1/4 in/out. Key input. Fully tested and cleaned. #9 condition with some minor rack rash. With manual.
$ 340
Contact
DBX 158
# 25466
8-channel Noise reduction System! w/ 5x410 and 4x411
$ 340
Contact
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.
DBX 163x and 463x
# 50904
Compressor and noise gate pair mounted together in rack. Very good #8+ condition with many tiny minor scratches on ears and face.
$ 300
Contact
DBX 157
# 38484
Declinear Noise Reduction System. With AP power supply upgrades, totally cleaned, serviced, calibrated. Nice wood sideboards, excellent mechanical and cosmetic condition. This unit contains a valuable VCA module.
$ 280
Contact
Symetrix 511A
# 23052
Modified w/ ground lift switch. Excellent Cosmetic Condition!
$ 280
Contact
Tascam DX-4D
# 43745
DBX I noise reduction. 4 channel professional noise reduction with 4 channels of direct inputs and 4 channels of direct outputs. 4 ch. Encode out, 4 ch. Decode in. Completely cleaned calibrated and tested in #9 condition. (Minor scratch top cover/rack rash)
$ 260
Contact
DBX 224 Type II
# 47486
Recording Technology Series, Rack Mount Heavy Duty Real Pro Construction. Simultaneous encode/decode, RCA ins/outs, level adjustment control for record, play (tape) and play (disc). Rack ears included -minor scratches at rack holes, low use unit, cleaned and fully serviced. +/- . 5db calibration. #9 condition,
$ 240
Contact
Rocktron prorax CE1
# 72659
Gain reduction, Compressor/ Expander. Tested OK. All switches and controls triple cleaned. Replaced regulator and upgraded main filter cap for regulation. Fully functional unit. Top cover has a fair amount of scratches. Faceplate mostly clean with some signs of use and light scratching. W/ AC adapter (120V AC 60hz 9w, 15v DC 300mA) #8- Condition
$ 230
Contact
DBX 224
# 41210
Later new version. Stereo type II tape noise reduction, With silver rack ears (with obvious wear) simultaneous encode/decode, older/space rack, front panel: Tape/Bypass/dbx Disc Selection, rear panel: preamp RCA STR I/O, Recorder RCA STR I/O, LUL ADJ, Trimmers: Tape Rec/Play, Disc Play. Cannot be converted to 220v. Like new cosmetic condition #9
$ 228
Contact
Tascam DX-4D
# 55359
4 channel DBX with rack ears. Cleaned, tested, minor cover scratches. 8+ condition
$ 220
Contact
DBX RX9
# 3162
TEAC Noise reduction, needs relays and work on circuit board which we do here.
$ 200
Contact
We know you have many options for purchasing audio equipment and parts, and we truly appreciate your business.
We strive to offer good products at competitive prices.
While we can't always match the prices of one isolated reseller, we make up for it by carefully selecting, testing, and finding unique and special rare parts, and we are here for the long run.
We guarantee everything we sell and we hope it helps you to enjoy a great listening experience.
Advent 100
# 49007
Dolby B noise reduction unit. Correctly restored, carefully calibrated and tested. Very good #8+ condition with some very minor scratches on faceplate and slightly darkened back panel jacks. We can also service and supply parts for these units!
$ 200
Contact
DBX 228 Dynamic range expander.
# 28044
One space rack mount. Unit performs disc encode as well as tape encode/decode.
$ 200
Contact
Tascam DX-4D
# 27287
DBX Noise Reduction rack unit. 4 ch, 16 RCA phono jacks on rear, 4 each (input, output, encode out, encode in), selectable 4-channel NR. Unit cleaned throughout. Excellent condition, minor scratches.
$ 200
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Tascam DX-4D
# 62960
With rack ears, SN:430309. Converted FV to always on dbx #9+ condition
$ 200
Contact
Tascam DX-4D
# 62962
4 channel noise reduction, this version has no FV cable. Converted FV to dbx always on. With rack ears. #8 condition
$ 188
Contact
DBX 150 pair
# 52073
Type I noise reduction. Single rack height x1/2 width. 1 11/16" HTx 8 3/8"W. RACK PAIR. NO RACK EARS. Missing knob on butterfly joint. To/from console, to/from tape rec. Calibration levels A+B on front panel, rec/play in/out switches. Tested and working 9/10 condition.
$ 188
Contact
DBX 224
# 55059
Dbx 224 Later Version -Silver Trim with anodized black face No Rack Mount -120 VAC - All cleaned and calibrated. #9 condition
$ 188
Contact
DBX 180
# 51899
Single rackspace. This is the best DBX noise reduction system on the market! +4dB, simultaneous encode/decode. 3 wire balance terminal strip on back panel. Used, in excellent #9 condition. Professionally cleaned, calibrated, and tested.
$ 180
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Concord DBA-10
# 59777
Dolby B. Outboard unit. RCA in/out. Encode or decode (not simultaneous) with level controls, test tone calibration, trim controls on front panel. Calibrated internally to +/- 1db tracking. 9/10 condition.
$ 168
Contact
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.
Burwen DNF 1201A
# 57248
Rack-mount noise reduction unit. Modified updated version with better high frequency filter, is less obvious for tape hiss reduction. Condition: 9
$ 160
Contact
Burwen KLH DNF 1201 A
# 60892
Stereo hiss, noise reduction. For use with tape decks, and records. This is a Modified version that allows more of the high frequencies and music ambiance to be retained when the filter operates. Rack mount 110/220 VAC. Much nicer operation in modern use. Minor but obvious face scratch, #7+ condition
$ 160
Contact
Advent Noise Reduction Unit Model 100
# 73078
Unit is latest version, with nice all plug in boards, Calibrates to +/- 1/2db, Superb version, Low noise advent, Later version, Board connectors cleaned, Switches & controls cleaned 2 times, Condition: 9
$ 148
Contact
DBX 150
# 52168
Type I noise reduction #u1507544. Two channels A/B, in/out switches, rec/play level adjustment, console in/out, tape in/out. Fully serviced and calibrated, excellent condition, includes rack ears. 9/10
$ 140
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