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Category:

Equalizers
( 129 Equalizers sorted by Price High to Low.)
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DBX 2031
# 64002
31 Band EQ with III NR and limiter. Faders are perfect. #9 condition. Cleaned, calibrated, low use.
$ 118
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DBX 2031
# 64000
31 band with DBX limiting VCA and noise reduction circuit. High quality design. Cleaned, Calibrated, known low use. #8+ condition
$ 118
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AGI 11 Band
# 63723
Stereo unit, in walnut compact box, odd compact design. 20 Hz, EQ level. Pro level use but RCA type connectors #8+ condition.
$ 108
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Ibanez GE3100
# 42832
1 rack unit, 31 band equalizer. +/-12 or +/-6db range, will do +14dbm out. Phone in/out. #9 condition, all cleaned and calibrated, low use time. New lower price!
$ 90
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Realistic Stereo Parametric EQ
# 40905
3 band eq Runs on 9v supply, or AA batteries.
$ 80
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We are presently operating on an APPOINTMENT ONLY basis. Please call us first at (617) 926-8020 or email us at sales@audioproz.com to schedule an appointment before you come into the shop for repairs, rentals, product recommendations, consultations, or anything other than minor purchases.
Summit EQP-200a output amp module
# 51880
For balanced line drive. Black color, 1" square. New.
$ 60
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Symetrix 532 E
# 63993
Dual 31 Brand EQ, Top board has broken faders and some minor issue with noisy OP AMP. Needs Replacements board is best easy fix. Unit is in excellent cosmetic condition #9, but failed 1 channel. Will sell for faders or board.
$ 48
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SAE 2900
# 54582
Black face plate only. Excellent condition, no rack rash. Ving minor dings at edges, one tiny scratch at face. Low use, all lettering perfect. Minor wear around edges, #9.
$ 28
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SAE 2900 and others
# 54580
50K faded used as lo/hi frequency control in 2900. 2 available, #9 condition. $24 each.
$ 24
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SAE 2900 and others
# 54579
100k dual ganged fader used as frequency control on the 2900. 2 available, #9
$ 24
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DG211J IC
# 47774
Special audio attenuator IC for DBX and others.
$ 18
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Furman SG-10 knobs R1378549 FS3001
# 50433
We have NOS knobs available for Furman SG-10 and others. Dual controls $12, single controls $8.
$ 12
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Furman SG-10 Equalizer Fader
# 72298
With red knob. (3) available. New, #10 condition. $12 each. (Used in Para-graphic equalizer)
$ 12
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Tapco 2200 Graphic Equalizer
# 27327
Rackmount 3 space, may be in working condition (unknown), but needs cleaning. Stereo (20-40, 60, 120, 240, 480, 960, 1920, 3840, 7680, 10k-20k) 10 band EQ. L/R analog needle type input/output (switchable) meters. L/R fader type output controls. 1/4" unbalanced in/out. XLR balanced L/R in/out. A few faders broken off at end, but still functional mechanically. $10 take as is, or use for parts.
$ 10
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Orban 674A and 424A modifications
# 47995
We repair and modify Orban products! We have a limited availability of parts for service, please contact us directly.
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We leave "SOLD" items on our website for machines that we often repair and provide parts for. This is to give you an idea of the products we typically carry, and direct you to alternatives you may not know about - we often have substitutes for out-of-stock parts, and are happy to recommend workarounds and different solutions to common problems.
Furman Q-301
# 29493
30 band
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DOD 431 Series Graphic Equalizer
# 58705
7/10 condition. 1 space rack mount. (A few broken fader switches, some cosmetic issues. )
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Realistic Stereo Parametric EQ
# 15964
3 band sweep EQ, stereo gain 6v battery
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Orban 672A
# 60672
3 rack space 8 band EQ. Has quality DB faders, tuning controls for every 150Hz of standard 20 to 20K spectrum, range switches, and Hz filtering for high and low power ins and outs. Very minor wear, overall good cosmetics. #8 condition
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Sony SEQ-9 Graphic EQ
# 27190
Single ended design transistor equalizer. Excellent operating condition, QC tested OK.
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DBX 10/20 parts
# 46054
Excellent condition parts machine. Unit has failed, locked up display microprocessor. Good for hobbyist or someone looking for face plate, knobs, power supply, etc. AudioPro could also fix this unit for on request.
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ADC SS-325 Digital EQ
# 71301
Has problem with display board. Sudden fall, was virtually new. #7 condition.
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Ashly SC-44 "Keyboard Input Processor"
# 51396
4-channel mixer with 3-band sweepable equalizer per channel, PA send, and separate monitor send. 3-rack space unit. Needs board soldering (old foam corroded foils, requires major take apart 02/25)
Not For Sale
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Shure SR 107
# 62492
10 band (mono) Parametric EQ, single rack. Bizarre modification redesign by A. P. Owner to make into 10 Harmonic Equalizer to create 2nd and 3rd harmonic enhancement XLR and 1/4 in/out. 1/4 Aux out can change the timbre of any signal. Engineering model #8 condition
Not For Sale
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NIKKO EQ 1
# 41230
Stereo 10 band equalizer, 2 space rack mount, Excellent quality: semi-pro equalizer, +/- 6 db gain input pro/consumer, tape mounted EQ loop, complete service cleaning: installed RFI suppression ground/ audio inputs, touch up board soddering, 8 out of 10 condition (slight rack scratch)
SOLD
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We are presently operating on an APPOINTMENT ONLY basis. Please call us first at (617) 926-8020 or email us at sales@audioproz.com to schedule an appointment before you come into the shop for repairs, rentals, product recommendations, consultations, or anything other than minor purchases.
Furman SG-10 Equalizer
# 57609
5 band sweep EQ with high/low level inputs/outputs 1/4" TRS. Modified power supply, upgraded capacitors, RF ground wiring upgrade, high/low phone jack inputs modified to allow 2 signals to be mixed in. Super accurate controls, used as shop owner's personal mastering EQ. Condition: 9
SOLD
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DOD R-830B
# 64001
Dual 15 Band EQ. 2 Rack space. Worn looking, but all controls work good and tight. All cleaned and Q. C'd. Tape on front, needs TLC #7 condition
SOLD
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TC Electronic TC-2240
# 25092
Stereo 4 band parametric
SOLD
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Azden GX-50
# 73233
Graphic EQ with real-time spectrum analyzer. Unit has many useful features. EQ on/off, EQ > REC on/off, Tape Monitor, Separate Left/ Right 10 band EQ with excellent frequency response. Spectrum analyzer with oscillator & Pink noise generator. Heat syncs added to regulators, regulators soldered to be more rugged. Unit is in excellent condition cosmetically and functionally. All controls are smooth & clean. Spectrum analyzer display is bright and accurate. Faceplate is very clean. Unit has seen minor signs of use, light surface scratches & fading from age. Very high quality equalizer. #8+ condition
SOLD
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Bose 901 Series IV
# 62478
Active equalizer. Completely rebuilt, updated for improved performance. Replaced all IC's with TL072, New filter caps on power supply (1000uf/25v), new caps on equalization circuits 22uf/25v NPS. Used good condition, small chip on left corner #9 condition (We repair/ service this as well as the other version BOSE Eq. )
SOLD
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