Roberts Audio Video

Selling and custom-installing audio & video equipment since 1934

Used Equipment & Clearance Items: Amplifiers

At Roberts, we are always in the market for good quality equipment. If you have Audio/Video equipment that you would like to sell, please contact us by phone at (860) 442-5314 or (800) 606-4434 or by email at roberts@robertsav.com.

PLEASE NOTE: All product names where shown are service marks and/or trademarks of their respective owners.

Bryston 7B ST Pair of Monoblock Amplifiers

Bryston 7B ST Pair of Monoblock Amplifiers

Condition:
Very clean with some slight scratches
Price Used:
$5000/Pair

Perfect working order . Stop by and listen. These are fine sounding amps that can really deliver the goods! The 7B SST single-channel amplifier employs a balanced-output design that reduces THD and IMD to unprecedented low values (typically 0.001% or less) . With a low noise floor (typically below -118dB) and excellent signal tracking characteristics (slew rate of 120 Volts per microsecond), the 7B SST monoblock assures a new degree of transparency, musicality, and ease of listening. Capable of delivering 900 Watts continuously into 4 Ohms, and with tremendous power reserves, the 7B SST offers virtually perfect freedom from overload on any type of speaker or music. Features Front panel membrane power switch Toggle power switch on rear panel No fuses; protected by resettable circuit breaker Soft-start circuit on power up Modular construction Quad-complimentary output stage Multiple filter capacitance per channel Independent power supply for each channel Robust pro audio construction Audiophile sound quality Selectable external power-up Quick-connect remote 12V power trigger input Delayed output on trigger Selectable gain settings for each channel Balanced and single-ended inputs XLR or 1/4 phone jack for balanced input RCA jack for single-ended inputs Channel status LED indicators Power output 900 Watts into 4 Ohms 600 Watts into 8 Ohms Distortion < 0.007% from 20Hz to 20kHz at rated output into 4 Ohms IM or THD+noise < 0.005% from 20Hz to 20kHz at rated output into 8 Ohms Gain & Sensitivity 1 Volt setting 29dB; 2.3V 2 Volt setting 23dB; 4.6V Noise (Measured with input shorted; 20Hz. to 20kHz.) >110dB below rated output @ 29dB gain (-75dBu) >113dB below rated output @ 23dB gain (-78dBu) Slew rate Greater than 120 volts per microsecond Power bandwidth From less than 1 Hz to over 100 kHz Damping factor Over 300 at 20 Hz, ref. 8 Ohms Input Impedance 50kOhms single-ended, 20kOhms balance

Rotel RB1048

Rotel RB1048

Condition:
Very Good
Sold New:
$800
Price Used:
$500

8 channel x 40 watt multichannel amplifier. Perfect for speakers though out your home, or upgrade a home theater. Also have matching Preamp and Tuner