Power Amplifiers

Nakamichi Stasis PA5 Amplifier Power output: 100 watts per channel into 8Ω (stereo) Frequency response: 7Hz to 150kHz Total harmonic distortion: 0.1% Damping factor: 60 Input sensitivity: 1.4V Signal to noise ratio: 120dB Speaker load impedance: 4Ω to 16Ω Semiconductors: 20 x transistors Dimensions: 435 x 135 x 368mm Weight: 16kg Learn More

Nakamichi Stasis PA 7 Stereo Power Amplifier Power output: 200 watts per channel into 8Ω (stereo) Frequency response: 20Hz to 20kHz Total harmonic distortion: 0.1% Damping factor: 60 Input sensitivity: 2V Signal to noise ratio: 120dB Semiconductors: 16 x output transistors per channel Dimensions: 435 x 200 x 421mm Weight: 27kg Learn More

Parasound HCA-500 High Current Power Amplifier Power output: 50 watts per channel into 8Ω (stereo) Frequency response: 10Hz to 60kHz Total harmonic distortion: 0.25% Damping factor: 100 Signal to noise ratio: 100dB Dimensions: 17-1/4 x 3-3/4 x 11-3/4 inches Weight: 16lbs Learn More

Goldmund VSR Mononoblock Power Amplifiers Silver Faceplate Great Condition Learn More

JBL Synthesis S820 Stereo Power Amplifier Power-200 Watts Per Channel Color-Black Learn More

These have the upgraded black circuit boards with high end caps from symphonic line, high quality parts internally. these are cut and paste from the web specs I found. Hope they are accurate 1 x 110 Watts RMS @ 8 Ohms (each) 2 Ohm load stable Class A/AB 1 - 600,000 Hz frequency range 120,000µF memory (each) 120 amps current delivery <0.04% THD (not audible) >800 continuous damping factor Input impedance 22K ohms DC offset <1 mV RCA inputs 400 VA Plitron transformer (each) Sanken Epitaxial Planar Transistors 2SA1216 & 2SC2922 Anti vibration dual thickness PCB Power consumption when idle ±30Watts 4 internal fuses 250V/6.3A, 5x20mm, fast blow 18"W x 16"D x 4 1/4"H weighs 32 pounds. Learn More

Mark Levinson No. 27 Stereo Power Amplifier Power output: 100 watts per channel into 8Ω (stereo) Frequency response: 4Hz to 122kHz Total harmonic distortion: 0.1% Gain: 26 dB Dimensions: 444.5 x 407.8 x 185.6mm Year: 1989 75Lbs Learn More

Mark Levinson No. 27.5 Stereo Power Amplifier Power output: 100 watts per channel into 8Ω (stereo) Frequency response: 4Hz to 122kHz Total harmonic distortion: 0.3% Gain: 26.9 dB Dimensions: 483 x 185 x 360mm Weight: 43.1kg Year: 1992 Learn More

Parasound Halo A21 2 Channel Power Amplifier Continuous power output: 250 watts RMS x 2, 20 Hz - 20 kHz, 8 Ω, all channels driven 400 watts RMS x 2, 20 Hz - 20 kHz, 4 Ω, all channels driven 750 watts RMS x 1, 20 Hz - 20 kHz, 8 Ω Current capacity: 60 amperes peak per channel Power bandwidth: 5 Hz - 100 kHz, +0/-3 dB at 1 watt Total harmonic distortion: < 0.2 % at full power IM distortion: balanced 16 V rms < 0.04 % Slew rate: > 130 V/µsecond Dynamic headroom: > 1.5 dB Interchannel crosstalk: > 80 dB at 1 kHz; > 63 dB at 20 kHz Input sensitivity: 1 V for 28.28 V, THX Reference Level Input impedance: 33 k Ω unbalanced; 66 k Ω balanced S/N ratio: 112 dB, input shorted, IHF A-weighted Damping factor: > 1100 at 20 Hz Voltage: 110V - 120V Dimensions: 17-1/2" w x 7-5/8" h x 20" d, 7" h without feet Net weight: 60 lb. Learn More

Spectral DMA-180 Stereo Power Amplifier Power Output: (continuous) @ 8 ohms - 200 Watts RMS @ 4 ohms - 400 Watts RMS @ 2 ohms - 683 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 (internal wiring) 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: 40 Amps Thermal Protect Threshold: 85° Celsius, 185° Farenheit AC Main Fuses: 2 @ 4A 3AG slo-blo, for 100 - 120 VAC, 2 @ 2A 3AG slo-blo, for 220 - 240 VAC Fuse Status: LED indicator (2) Size and Weight: Dimensions: 48cm (19")W x 17cm (6 1/4")H x 48cm (19")D Weight: 60 lbs, 27.2 KG Net Learn More

Krell KSA250 from original owner one left Learn More

Solid-state Output power: 70Wpc into 8 ohms 20Hz-20kHz (1984) 105Wpc into 8 ohms (20.2dBW) 105W into 4 ohms (17.2dBW), both continuous power, 5Hz-45kHz, with 0.09% THD (1989). Dynamic headroom: 3.2 dB (1984). Frequency response: 3Hz-70kHz ±3dB (1984). Input impedance: 24.3k ohms (1989). Sensitivity: 1.1V for full output (1984) 120mV for 1W (1989). Dimensions: 19" W by 6" H by 15" D. Weight: 25 lbs. Learn More

McInstosh MC1000 Mono Power Amplifier One amp works properly, one needs repair (we will get to it but then the price goes up) inquire for freight quote Power output: 1000 watts into 8Ω (mono) Frequency response: 20Hz to 20kHz Total harmonic distortion: 0.005% Damping factor: 200 Input sensitivity: 2.5V Signal to noise ratio: 115dB Speaker load impedance: 2Ω to 8Ω Dimensions: 264 x 438 x 511mm Weight: 47.6kg Learn More

Krell KSA80B One owner all original excellent condition We can recap for $500 additional if desired before shipping. Later balanced version Learn More

Power output: 60 watts per channel into 8Ω (stereo) Frequency response: 10Hz to 60kHz Total harmonic distortion: 0.1% Damping factor: 150 Input sensitivity: 1V Signal to noise ratio: 90dB Learn More

Inputs: RCA and Balanced Power output: 200 watts per channel into 8Ω (stereo); 400w/ch into 4 ohms, 800w/ch into 2 ohms and 1600w/ch into 1 ohm Learn More

SUMO The Nine + Differential Power Amplifier Sumo gives you the real thing. The nine is a pure class A power amplifier that remains class A even when driving 4 Ohm loudspeakers. The Nine's approach to class A is so unique it earned a US patent - an amazing achievement for an audio component. Sumo's exclusive class A engineering provides all the advantages and none of the disadvantages of typical class A designs. The unit features an all aluminium anodized chassis with massive extruded heat sinking and built in whisper fan for efficient heat dissipation. Military grade G-10 glass epoxy printed circuit boards throughout. Power supply incorporating 1.4KW shielded toroidal transformer and 42,000 microfarad computer grade filter capacitors, resulting in supply voltage regulation better than 3%. Learn More

AMC 2445 - 2/4 Channel Power Amplifier Power output: 90 watts per channel into 8Ω (stereo), 45 watts per channel into 8Ω (4 channels) Frequency response: 20Hz to 20kHz Total harmonic distortion: 0.03% Damping factor: 100 Input sensitivity: 0.866V Speaker load impedance: 4Ω (minimum) Dimensions: 430 x 112 x 288mm Weight: 9.5kg Year: 2001 Learn More

Power output: 250 watts per channel into 8Ω (stereo), 1000 watts into 8Ω (mono) Frequency response: 20Hz to 20kHz Total harmonic distortion: 0.1% Input sensitivity: 1.6V Signal to noise ratio: 100dB Speaker load impedance: 4Ω (minimum) Dimensions: 19 x 20.75 x 8 inches Weight: 65lbs Learn More

Goldmund Telos 300 Stereo Power Amplifier Silver Excellent Condition Original Box And Accessories Learn More

NAP 300 Power Amplifier And 300 Power Supply: Analogue Inputs: (2) XLR Input Impedance: 18k Ohms Speaker Outputs: (2) L & R, 4mm "banana" sockets Power output: Continuous, 8 Ohms: 90 Watts per channel Transient: 500VA Quiescent Consumption: 27VA Voltage Gain: +29dB Frequency response: -3dB @ 2Hz and 70kH Minimum Load Impedance: 2 Ohms Mains supply: 100-120V or 220-240V, 50/60Hz Dimensions (H x W x D): NAP 300 and the NAP 300PS - 87 x 432 x 314mm Shipping Specs for the NAP 300 Stereo Power Amplifier: Dimensions: 23” D x 19” W x 9” H Weight: 28 lb Shipping Specs for the NA PS300 Power Supply: Dimensions:23” D x 19” W x 9” H Weight: 39 lb Learn More

Power output: 100 watts per channel into 8Ω (stereo) Frequency response: 20Hz to 20kHz Total harmonic distortion: 0.005% Damping factor: 100 Input sensitivity: 1V Signal to noise ratio: 107dB Dimensions: 425 x 170 x 285mm Weight: 16kg Learn More

Plinius 8200P Stereo Power Amplifier Black Very Good Condition Learn More

Damping factor into 8 36 Signal to noise ratio ref 100W 8 A-weighted 111dB Signal to noise ratio ref 1W 8 A-weighted 91dB Input signal for clipping 1V RMS Peak current into 1 (1kHz 1mS) +/-28 amps peak (780W peak power) Burst power 2 300 Watts 2 @1% THD+N (1kHz for 20mS, repeat 500mS IHF) Audio Inputs 2 x True balanced via XLR, 47k 34k singled ended via legacy adaptor lead Audio Outputs Crosstalk 60 dB THD + N at 2/3rds full power 8 @1kHz (0.013%) Power Output 100 Watts 8 @0.1% THD+N (100W @0.1%) 190 Watts 4 @1% THD+N Frequency Response -3dB @ 1.4Hz to 100kHz Gain +29 dB Physical Weight 37.04lbs (16.8kg) Dimensions (HxWxD) 35/8x17x121/2" (9.15x43.2x31.75cm) Power Mains Supply 115V or 230V, 50/60Hz Power Consumption Passive consumption: 26W (idle) Standby consumption: <0.5W Product Type Type Power Amplifier Learn More

Mark Levinson ML20 shippiing price is double the ship quote Learn More

sold 12/23 another kav500/5 available 1/24 Krell KAV-500/5 Krell KAV-500 Multichannel Amplifier 100 Watts/Channel into 8 Ohms, 200 Watts into 4 Ohms 400 Watts/Channel bridged (2 channels) Mfr FR 20 Hz - 20 kHz ± 0.5 dB THD < 0.03% Input Impedance 100 kOhms Size: 6.25" H x 19" W x 17" D Weight: 47 pounds Learn More

Like new condition all packing and accessories Frequency response 20 Hz to 20 kHz +0, –0.08 dB <0.5 Hz to 100 kHz +0, –3 dB Signal-to-noise ratio >95 dB, wideband, unweighted, referred to full power output >115 dB, “A”-weighted Gain 26.2 dB Total harmonic distortion <0.04% at 1 kHz, at 200 W, 8 Ω <0.15% at 20 kHz, at 200 W, 8 Ω Input impedance Single-ended: 100 kΩ Balanced: 200 kΩ Input sensitivity Single-ended or balanced: 1.96 V RMS Output power 200 W RMS at 8 Ω 360 W RMS at 4 Ω Output voltage 113 V peak-to-peak 40 V RMS Output current 13.4 A peak Slew rate 40 V/μs Output impedance <0.015Ω, 20 Hz to 20 kHz Damping factor >530, 20 Hz to 20 kHz, referred to 8W Power consumption Standby: 1 W Idle: 182 W Maximum: 2100 W Heat output Standby: 3.4 BTU/hr. Idle: 623 BTU/hr. Maximum: 7182 BTU/hr. Inputs 5 single-ended via RCA connector 5 balanced via XLR connector Outputs 5 pairs binding posts Dimensions 17.1 in. W x 7.65 in. H x 21.10 in. D 434 mm W x 194 mm H x 536 mm D Weight 95 lbs., 43.2 kg (shipping) 85 lbs., 38.6 kg (unit only) Learn More

Crown SA 2 Distinction Series Amplifier Very Good Condition Learn More