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Power Amplifiers

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  • Spectral DMA250 inquire

    Spectral DMA250 inquire

    Spectral DMA250, used factory carton, I can voltage convert prior to shipping. INQUIRE IF STILL AVAILABLE BEFORE PURCHASING. http://www.spectralaudio.com/dma-250.htm SPECIFICATIONS DMA-250 Stereo Power Amplifier Power Output: (continuous) @ 8 ohms - 200 Watts RMS @ 4 ohms - 350 Watts RMS @ 2 ohms - 570 Watts RMS Output Current: 60 Amps peak per channel Frequency Response: ±0.1 dB, DC-150 KHz ±1 dB, DC-1 MHz ±3 dB, DC-1.8 MHz Distortion: Static: Less than 0.015% from DC to 100 KHz, typically 0.009% @ 200 WRMS/8 ohms Dynamic: 8 Tone Cluster Test 20 KHz @ 500 Hz separation; 0.01% 8 ohms; 0.015% 4 ohms Speed: Rise Time: Less than 400 nanoseconds Settling: 1.5 microseconds to -40dB Slew Rate: 600 volts/microsecond Noise: Signal to Noise: 97dB unweighted, 107dB ASA A Crosstalk: 98dB @ full power 8 ohms Input: Impedence: 100K ohms in parallel with 100 pf Sensitivity: 1.5 volts/nominal output Power Supply: Line Voltage: 100 volts, 120 volts, 240 volts (factory set) AC Voltage Range: ±10% Maximum Consumption: 1600 Watts Quiescent Consumption: 250 Watts Operating Temp: 0° to 50° Celsius range; 32° to 122° Farenheit Protection Features: DC Protection Servo: 0.5 volt range Current Limit Onset: 60 Amps Thermal Threshold: Protects at 85° Celsius, 185° Farenheit AC Main Fuses: 2 @ 2-1/2A 3 AG slo-blo, for 100 - 120 VAC 2 @ 1-1/4A 3AG slo-blo, for 220-240 VAC Size and Weight: Dimensions: 48.22cm (19")W x 18.4cm (7 1/4")H x 45.8cm (18")D Weight: 62 lbs, 28.1 KG Net Learn More
    $4,400.00

  • Conrad Johnson LP260se 260 watt/ch mono amps

    Conrad Johnson LP260se 260 watt/ch mono amps

    Conrad Johnson LP260se very similiar to all the top of the line CJ monos These have teflon caps, maybe one year of use on these only. Basically these are ART monos without the better gold cosmetics on the transformers. Learn More
    $8,600.00

  • Bryston 4B e

    Bryston 4B e

    Bryston 4B e 4be (commercial version , balanced looks like 4bst to me) 2 available 2/22 used in a home only Learn More
    $1,750.00

  • Threshold SA/3 Class A

    Threshold SA/3 Class A

    Threshold SA/3 50watt/channel Stasis Pure Class A Power Amplifier. This amplifier, designed by Nelson Pass and Built in the USA by Threshold employs pure Class A circuitry at every stage - there is no corrective feedback loop Learn More
    $2,500.00

  • Rotel RMB-1066   6 channel amplifier
    $425.00

  • STAX SRM-T8000 headphone amplifier

    STAX SRM-T8000 headphone amplifier

    Almost no use, this is the top of the line Stax headphone amplifier in the original double box The SRM-T8000 is STAX new designed top-of-the-line driver unit. For the first time in STAX driver unit history, the large-sized toroidal transformer and non-magnetic aluminum chassis have been adopted for unclouded clear tone quality! A newly developed large-sized aluminum insulator, combined with new material of high isolation efficiency and grip power, make this flagship designed SRM-T8000 a top performer. Features: • The full-balanced transmission of hybrid amplifier configuration with 6922 dual triode tube of established reputation for the first stage and class-A operating semiconductor at output stage realized ultra low-noise, accurate and rich musical expression. • The vacuum tube of the first stage was mounted on the independent board in order to shut out vibration and external noise. Further, noise has been totally eliminated by vibration-proofing damper and vacuum tube shield cover which are used also for a hard disk etc. • The large-sized toroidal transformer - for the first time in STAX driver unit history - as well as non-magnetic aluminum chassis has been adopted for unclouded clear tone quality. • Four pairs of inputs are equipped. (Notes: LINE4 is an optional slot for future purpose. As for now, release is not yet determined.) • The SRM-T8000 features the EXTERNAL (BYPASS) function which passes the volume controller of the unit and enables volume control through external equipments. • The newly developed large-sized aluminum insulator, combined with new material of high isolation efficiency and grip power, has been employed. Specifications: Frequency response: 1Hz - 115kHz / when used with one earspeaker Rated input level: 100mV (at 100V output) Maximum input level: 30Vrms. / at minimum volume Gain: 60dB Harmonic distortion: 0.01% or less / 1kHz / when used with one earspeaker Input impedance: 50kO / 50kOx 2 (XLR input) Maximum output voltage: 470Vrms Mains voltage: AC120V, 50/60Hz Power consumption: 58W (95W with optional slot) Operating temperature: 0 to 35 degrees C (less than 90% humidi- ty, non condensing) Dimension: 320 (W) x103 (H) x395 (D) mm (protruding portion included) Weight: 7.3kg Learn More
    $4,600.00

  • Rotel RB-985

    Rotel RB-985

    Rotel RB-985 Five channels of amplification, THX certified, 100 watts rms output per channel at 8 Ohms, Frequency response 10 Hz - 80 kHz plus or minus 0.5 dB, harmonic distortion less than 0.03%, input impedance 27 kOhm, damping factor 180, size 5 1/2"H x 17 3/8"W x 15 5/8"D, weight 34 pounds Each of the five amplifier channel boards has had their capacitors changed for as new sound quality and reliability. Learn More
    $450.00

  • KR Enterprise (KR Audio) KR800 mono amplifiers (pair)

    KR Enterprise (KR Audio) KR800 mono amplifiers (pair)

    KR Enterprises KR800 mono amplifiers, very nice, extra tubes available Learn More
    $5,500.00

  • Krell (all models)

    Krell (all models)

    We are authorized dealers for all Krell products. Please inquire about any product. Learn More
    $999,999.99

  • Mark Levinson 23 recapped 100v (Japan ideally)  sold ?

    Mark Levinson 23 recapped 100v (Japan ideally) sold ?

    excellent condition Mark Levinson 23 200 watt/channel amplfiier, 100V set at present, can be changed Description: Solid-state stereo power amplifier. Rated power output: 200Wpc continuous into 8 ohms (23dBW) with less than 0.1% THD, 400Wpc continuous into 4 ohms (23dBW) with less than 0.2% THD, both from 20Hz–20kHz, both channels driven. Damping factor: greater than 600 at 50Hz, 8 ohms (equivalent to an output impedance of 0.013 ohms). Frequency response: 4Hz–140kHz, —dB. Input impedance: 50k ohms shunted by 1.5nF. Voltage gain: 26dB (load not defined). Input sensitivity: 141mV for 1W output. Dimensions: 19" (483mm) W by 8.25" (210mm) H by 15.7" (399mm) D. Shipping weight: 105 lbs (48kg). Learn More
    $2,700.00

  • Krell FPB350mcx mono single amplifier ONE AMP ONLY

    Krell FPB350mcx mono single amplifier ONE AMP ONLY

    Krell FPB350mc one mono amp only excellent condition best shipped by truck, inquire Learn More
    $3,500.00

  • Lexicon NT512 five channel, same as Bryston 9Bst

    Lexicon NT512 five channel, same as Bryston 9Bst

    Lexicon NT512 available, one silver only check availability before purchasing. 120 watts per channel RMS into 8 Ohms, 200 into 4. THX certified Balanced and RCA Learn More
    $1,350.00

  • Goldmund Mimesis 9.2 mono amplifiers

    Goldmund Mimesis 9.2 mono amplifiers

    Goldmund Mimesis 9.2 275 watts per channel mono block power amplifiers one of the best sounding amplifiers from this quality company Learn More
    $6,500.00

  • Krell KSA-i400  NEW REFERENCE!  IN STOCK!

    Krell KSA-i400 NEW REFERENCE! IN STOCK!

    Krell KSA-i400 NEW REFERENCE! IN STOCK! Please inquire for pricing and for trade-ins at (888)850-4366 Learn More
    $35,000.00

  • Pioneer Series 20  M-22
    $1,599.00

  • Lexicon LX-7

    Lexicon LX-7

    Lexicon LX-7 $6000 retail in silver excellent cosmetics https://hometheaterreview.com/lexicon-rx-7-multi-channel-power-amplifier-reviewed/ Learn More
    $2,100.00

  • Anthem P2

    Anthem P2

    Anthem P2 retail $4500 in very good condition Learn More
    $2,800.00

  • Mark Levinson ML11

    Mark Levinson ML11

    Mark Levinson ML11 power amplifier . With its 2 x 50W in a small enclosure with the heat sinks hidden inside makes it look shy, but it's not. It another great amplifier of MLAS which is perfect as an all-purpose home hifi amplifier. As the others he can drive almost any load. Specifications Power output: 2 x 50W. Weight: 11Kg Maximum power : 260W. Learn More
    $1,480.00

  • Jadis Defy 7 in repair

    Jadis Defy 7 in repair

    Jadis Defy 7 will not ship until mid 2023 in repair, needs new transformer Learn More
    $3,700.00

  • Sonic Frontiers Power 1

    Sonic Frontiers Power 1

    Sonic Frontiers Power 1 , just serviced Learn More
    $1,600.00

  • ATI 2505

    ATI 2505

    ATI 2505 106lb super high quality amp owner's manual: http://www.ati-amp.com/manuals/ATI_2505_manual.pdf Learn More
    $1,500.00

  • Perreaux PMF5150B 500 watts/channel
    $1,999.00

  • Krell 5200XD

    Krell 5200XD

    Krell 5200XD excellent, like new condition, all packing and accessories Learn More

  • Mark Levinson No 433 three channel

    Mark Levinson No 433 three channel

    Mark Levinson No 433 with box/packing. Not used last ten years Learn More
    $4,300.00

  • B&K Reference 200.7

    B&K Reference 200.7

    B&K Reference 200.7 Looks like new old stock. Original box/packing 200 Watts/channel 76lbs Learn More
    $2,999.00

  • PS Audio Delta 100
    $600.00

  • Krell FPB300
    $3,500.00

  • Mcintosh MC7270   three  available inquire

    Mcintosh MC7270 three available inquire

    Mcintosh MC7270 One in excellent 8/22 One in service 6/22 awaiting new factory glass, main output filter caps will be changed out also. Original box from Mcintosh if shipped, inquire for freight cost Too fragile for Fedex or UPS ground. Learn More
    $2,850.00

  • Mcintosh MC2300 rare gold faceplate

    Mcintosh MC2300 rare gold faceplate

    Mcintosh MC2300 rare gold faceplate In 9/22 we will recap this unit before shipping pics soon Learn More
    $4,400.00

  • Counterpoint SA12
    $700.00

  • Krell KAV-250A/3  250 watt/channel  3 channels recapped warranty   6 months

    Krell KAV-250A/3 250 watt/channel 3 channels recapped warranty 6 months

    Krell KAV250-A/3, overhauled, new capacitors so they sound the way they should, 6 months parts and labor warranty, KAV-250a Stereo Amplifier Learn More
    $1,999.00

  • Krell Evolution 400 Mono Amplifier
    $3,500.00

  • Crown D-150

    Crown D-150

    Crown D-150 excellent like new condiition Was in a rack since new. Learn More
    $1,180.00

  • Marantz sixteen 16
    $850.00

  • Halcro DM 68 mono single mode amplifiers sold

    Halcro DM 68 mono single mode amplifiers sold

    Halcro DM68 upgrade servicing (caps) 1/19 black pair , top of the line worldwide voltage inquire for actual trucking charges sold Learn More
    $9,999.00

  • Cary CAD 211 M Mono Amplifiers Gold Edition

    Cary CAD 211 M Mono Amplifiers Gold Edition

    Top of the line. Cary 211M mono amplifier, used pair in excellent condition original crates and double boxes. Photos are without tubes but you get those packed separately. It is well known that using monoblock amplifiers, as opposed to both channels together as a stereo chassis, is the best way to get powerful and lifelike music. By using separate power supplies that can be much more massive, each amplifier can have more dynamic power and be quieter. Keeping two separate amplifiers also makes any inter-channel crosstalk in the amplifiers impossible, so separation is better, meaning your soundstage and musical imaging will be larger and more well-defined. The simple act of separating the two channels provides a lot of distinct advantages, but also increases the investment because of needing to double up on power supplies and chassis parts. Learn More
    $7,000.00

  • Audio Research SD135

    Audio Research SD135

    Audio Research SD135 excellent condition, original box $5000 retail in 1/23 Learn More
    $2,200.00

  • Jeff Rowland Research Model 3 Monoblock Pair
    $3,150.00

  • Mcintosh 240

    Mcintosh 240

    Mcintosh 240 original one owner inquire before purchasing in 6/22 beautiful condition Learn More
    $5,200.00

  • Marantz MM7025

    Marantz MM7025

    Marantz MM7025 used excellent About this product Product Information The Marantz MM7025 is a 2-channel amplifier that is sure to boost the performance of your audio system. With a power output of 140 watts, this Marantz amplifier makes sure that you experience a power-packed performance. The 8 Hz - 100 kHz frequency response range of this 2-channel amplifier provides you with crisp highs and a tight bass response. With a signal-to-noise ratio of 105 dB, this Marantz amplifier reproduces even the minutest of musical detail with reduced background noise. The Marantz MM7025 features RCA and balanced XLR inputs to provide complete system compatibility, without the need of a preamplifier or a processor. Learn More
    $800.00

  • Crown K1 Balanced Current Amplifier (4 available) 350 watts/channel

    Crown K1 Balanced Current Amplifier (4 available) 350 watts/channel

    Crown K1 Balanced Current Amplifier (4 available) in 3/23 consumer used only Crown K1 Amplifier at a Glance: Balanced Current Amplifier technology ensures thermal stability without a fan! Delivers 350 watts at 8 Ohms, up to 1500 watts (bridged) at 4 Ohms Incredibly flat frequency response for compromise-free audio Massive power with one tenth the heat! The K1 amp from Crown is the first amplifier to take advantage of Crown's new Balanced Current Amplifier technology. This technology yields extremely efficient power amplification while generating just one-tenth the heat of conventional amplifiers. In fact, the powerful K1 Amplifier can deliver an amazing 750 watts per channel into 2 Ohms (and that's a very solid 2 Ohms)! As a result the amp can put out clean, uncolored power without the use of a fan. No fan means the K1 runs quietly and cleanly, takes up less space in a rack and requires less maintenance. The K1 also boasts advanced circuitry protection that guards against DC, mismatched loads, internal faults and high frequency overloads. Crown is so confident of the K1's stability that it's backed by a three-year no fault warranty! Power to spare, no matter what your configuration The Crown K1 Amplifier is rated to deliver 350 watts per channel at 8 Ohms, 550 watts into 4 Ohms or 750 watts per channel into 2 Ohms. In addition, in bridged mode the K1 has a capability of 1100 watts at 8 Ohms or 1500 watts at 4 Ohms - all while running without a fan! The K1 is cool, clean and quiet. Legendary Crown frequency response Crown amps have a long history of providing crystal-clear audio response in critical listening situations, and the K1 Amplifier is no exception. Flat frequency response: (+/- .25 dB) from 20Hz to 20kHz ensure you get out of the K1 exactly what you put into it! Crown K1 Amplifier Features: Soft Start (Keeps amp from drawing large currents when first turned on) Switchable Input Sensitivity (1.4V or 26dB) Mono mode switches: Bridged, Y (parallel) or both (for daisy chaining) Balanced XLR and 1/4" inputs 5-way binding posts Channel 1 and Channel 2 gain controls with notched settings LEDS: Thermal (Warns of need to dissipate heat), Clip (Warns of distortion in the amp), IOC (Input / Output Comparator: Warns of distortion at 1/30th the level of clipping by comparing the actual waveforms of the input to the output), Signal (glows when output signal is present), Enable (Indicates Power status) Frequency Response: +/- .25 dB for 20Hz - 20kHz Power Output (per Channel): 750 watts into 2 Ohms, 550 watts into 4 Ohms, 350 watts into 8 Ohms Bridged (mono) power: 1500 watts at 4 Ohms, 1100 watts at 8 Ohms Signal-to Noise (A Weighted): >100dB below rated power Damping Factor: >3000 from 10 to 400Hz Input Impedance: Nominally 20KOhms balanced, 10KOhms unbalanced Passive convection cooling allows amplifier to drive 2 Ohm load at 8db into clip in 104 degree environment! Power Supply can configure to 100, 120, 200, 220, 230, 240, 250 VAC at 50 or 60 Hz Learn More
    $450.00

  • Mcintosh MC2505

    Mcintosh MC2505

    Mcintosh MC2505 in beautiful condition, one owner in 3/23 New box and packing ordered from Mcintosh 3/23 optional wood case pictured $350 additional plus shipping Learn More
    $2,600.00

  • Crown Reference 1

    Crown Reference 1

    Crown Reference 1 in service 9/21 Inquire before purchasing Reference I (120 V, 60 Hz models) The Crown® Studio Reference I power amplifier shall be a solid-state two-channel model employing multi-mode (AB+B) grounded bridge(TM) output circuitry with a variable impedance (VZ) power supply for each channel. The outputs shall be switchable as stereo, bridged-mono or parallel-mono modes of operation. The bridged-mono mode shall bridge the outputs to provide increased output voltage. The parallel-mono mode shall parallel the outputs to provide increased output current. The output impedance of each channel shall be less than 10 milliohms in series with less than 2 microhenries in stereo mode. The variable impedance power supplies shall reduce unnecessary voltage across the output devices by automatically switching to a parallel mode when less voltage is required by the output circuitry and to a series mode when more voltage is required. The amplifier shall contain protection circuitry which limits the drive level placed on the output devices before their SOA (Safe Operating Area) is exceeded. This protection circuitry shall calculate the instantaneous voltage across and current through the output devices while factoring in their simulated junction temperatures to predict how close they are to their operating limits. This protection will be called “ODEP.” The amplifier shall contain controlled slew-rate voltage circuitry to protect it against radio frequency interference burnouts. It shall also be protected from current overload at its output stage. The slew rate of the amplifier shall be greater than 30 volts per microsecond in stereo mode. The amplifier shall temporarily go into a stand-by mode if its power transformer becomes excessively hot and shall automatically resume normal operation once it has cooled to a safe operating temperature. Front-panel controls shall include an enable on/off switch and a detented input level control for each channel. Rear-mounted controls shall include a ground lift switch to isolate the signal ground from the chassis ground, a switch which selects between stereo, bridged-mono and parallel-mono modes of operation and a reset switch for the AC mains circuit breaker. Internal controls shall include an input sensitivity switch to select between 0.775 V, 1.4 V or a fixed voltage gain of 26 dB for full rated output. A Crown P.I.P. and P.I.P.2-compatible expansion connector shall be provided behind an access panel in the rear to accept auxiliary input modules. It shall be fully compatible with the Crown IQ System. Front panel indicators shall include an amber power enable indicator, an amber ODEP protection system indicator for each channel which shall normally be illuminated to confirm the availability of reserve thermodynamic energy and which shall dim in proportion to limiting when the power demands of the output stages have been exceeded, a green IOC indicator for each channel, and a green Signal indicator for each channel which shall normally flash at moderate intensity to show the presence of an audio signal. The power amplifier shall meet or exceed the following performance criteria. Input sensitivity for rated output: 26 dB voltage gain (unbalanced). Rated FTC output in stereo mode with less than 0.1% THD: 780watts per channel (20 Hz to 20 kHz) into 8 ohms. Hum and noise: at least 120 dB (A weighted) below full rated output power. Phase response: +5 to –15 degrees from 20 Hz to 20 kHz at 1 watt. Frequency response: 20 Hz to 20 kHz, 0.1 dB at 1 watt into 8 ohms per channel in stereo mode. Damping factor: greater than 20,000 from 10 to 200 Hz into 8 ohms. Intermodulation distortion (SMPTE): less than 0.005% from full bandwidth power to 78 watts rising linearly to better than 70 dB at 20 kHz. Harmonic distortion: less than 0.02% at rated low-distortion 1 kHz power. The amplifier shall be safe when driving any kind of load—even highly reactive ones. The power requirements shall be 120 VAC at 60 Hz. At idle, the amplifier shall draw 90 watts or less. The amplifier chassis shall be constructed of steel with a durable black finish and shall be designed for flow-through fan-assisted ventilation from the front panel to the side panels. The amplifier shall have an aluminum front panel with super-gloss Imron finish and Lexan overlay. The dimensions of the amplifier shall allow for 19 inch (48.3 cm) EIA standard (RS- 310-B) rack mounting. The amplifier shall be 7 inches (17.8 cm) tall, 16 inches (40.6 cm) deep behind the rack-mounting surface, and 2.75 inches (7 cm) in front of the rack-mounting surface. The amplifier shall weigh 60 pounds, 11 ounces (27.6 kg) and shall have a center of gravity approximately 6 inches (15.2 cm) behind the front panel. The amplifier shall be designated the Crown Studio Reference Learn More
    $2,500.00

  • Plinius Odeon 7 channel

    Plinius Odeon 7 channel

    Plinius Odeon 7 channel in 10/22 with original crate please inquire for a freight quote replaced low voltage regulator capacitors on each channel 10/22 large filter caps are all good. Learn More
    $5,500.00

  • Lexicon 512 5 channel (Same as Bryston)

    Lexicon 512 5 channel (Same as Bryston)

    Lexicon 512 5 channel (Same as Bryston) 3 channels just recapped, two other channels also recapped recently Learn More
    $1,350.00

  • Bryston 4b thx version

    Bryston 4b thx version

    Bryston 4b thx version Just recapped for like new sound and reliability Learn More
    $1,300.00

  • Devialet Expert 200

    Devialet Expert 200

    Devialet Expert 200, original box/packing, excellent condition Learn More
    $2,700.00

  • JBL Synthesis S400 stereo power amplifier

    JBL Synthesis S400 stereo power amplifier

    JBL S400 stereo power amplifier Power output: 200 watts per channel into 8Ω (stereo), 400W into 8Ω (mono) Frequency response: 10Hz to 70kHz Total harmonic distortion: 0.02% Damping factor: 120 Input sensitivity: 1V Signal to noise ratio: 105dB Speaker load impedance: 4Ω (minimum) Dimensions: 5.5 x 19 x 16.5 inches Weight: 45lb Learn More
    $599.00

  • Niles SI-1260 Multi Channel-12 Power amplifier

    Niles SI-1260 Multi Channel-12 Power amplifier

    Niles SI-1260 Multi Channel Power amplifier 12-channel amplifier power output (20-20,000 Hz at 0.06% THD, all channels driven): 60 watts RMS per channel at 8 ohms 80 watts RMS per channel at 4 ohms adjacent channels are bridgeable to 120 watts RMS into 8 ohms unique BusMatrix™ selector allows four configurable options for each channel: left bus, right bus, left plus right bus (mono), or the channel's dedicated input 6 independent turn-on circuits for multi-room audio applications 3 turn-on modes: automatic signal-sensing, voltage trigger, and manual voltage trigger input accepts 3-30V AC/DC binding posts spaced to accommodate dual banana plugs independent level controls for each channel cascade outputs for "daisy-chaining" additional amplifiers independent protection circuits for each channel removable AC power cord weight: 70 lbs. 17"W x 7-3/8"H x 18-1/2"D Learn More
    $795.00

  • Niles SI-1230 Multi Channel Power Amplifier

    Niles SI-1230 Multi Channel Power Amplifier

    Niles SI-1230 Multi Channel Power Amplifier- 12 Channels bench tested 5/18 30 watts RMS per channel into 8 Ohms, all channels driven 42 watts RMS per channel into 4 Ohms, all channels driven Adjacent channels are bridgeable to 80 watts RMS into 8 Ohms, all channels driven Three turn-on modes: music sense, voltage trigger and manual Binding posts spaced to accommodate dual banana plugs Item Weight 34.8 pounds Learn More
    $299.00

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