Audio Research REF250SE Mono Amp Pair, Factory New, Black

The Reference 250 SE features new enhancements outside as well as major performance advances inside. From the moment the music begins, the foundation of an exceptional musical experience is evident. Sound emerges from an inky black background, revealing micro-details and performance cues typically reserved for the live performance.

About this product
New-in-box pair of Audio Research REF250SE Monoblock Amplifiers in Black finish.

This product has been recently discontinued by Audio Research.

Amps come with full factory warranty.

Specifications

• POWER OUTPUT: 250 watts per channel continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 0.5% at 250 watts, below .04% at 1 watt. Approximate actual power available at "clipping" 270 watts (1kHz). (Note that actual power output is dependent upon both line voltage and "condition" i.e. if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not very critical.)


• POWER BANDWIDTH: (-3dB points) 5Hz to 70kHz.


• FREQUENCY RESPONSE: (-3dB points at 1 watt) 0.5Hz to 110 kHz.


• INPUT SENSITIVITY: 2.4V RMS Balanced for rated output. (25.5 dB gain into 8 ohms.)


• INPUT IMPEDANCE: 200K ohms Balanced.


• OUTPUT TAPS: 4, 8, 16 ohms.


• OUTPUT REGULATION: Approximately 0.9dB 16 ohm load to open circuit (Damping factor approximately 10).


• OVERALL NEGATIVE FEEDBACK: 8.8dB.


• SLEW RATE: 20 volts/microsecond.


• RISE TIME: 1.5 microseconds.


• HUM & NOISE: Less than 0.2mV RMS � 110dB below rated output (IHF-A weighted, input shorted, 16 ohm output).


• POWER SUPPLY ENERGY STORAGE: Approximately 900 joules.


• POWER REQUIREMENTS: 105-130VAC 60Hz (260-250VAC 50Hz) 770 watts at rated output, 1000 watts maximum, 380 watts at "idle," 1 watt off.


• TUBES REQUIRED: 3 Matched pair KT150 (Power output V1-6); 1 Matched pair KT150 (Driver V8-9); 2 6H30 (Gain stage V7 and Regulator Driver V10); 1 6550C (Regulator V11).


• DIMENSIONS (WHD): 19" x 8.75" x 19.5" Handles extend 1.5" forward.


• WEIGHT: 73 lbs. (33.2 kg) Net; 88 lbs. (40 kg) Shipping Each

Covid-19 Update
Paragon has resumed normal shipping operations, though major delivery carriers are still experiencing some delays. Our showroom has re-opened to the public, and we continue to offer curbside service. We thank you for your patience and continued support.

Additional Information
Please call 734.662.3595 and ask for Richard if you have any questions about this product. We make every effort to update our ads quickly when inventory fluctuates, but we encourage you to call and check product availability, as we are also a brick and mortar store.

For a complete listing of all of our specials, please visit: Paragon Pre-Owned & Specials