SOLD - DEALER AD: Rock-Solid Bryston Power Amplifier 4B
Item #649445647Info: Rock-Solid Bryston Power Amplifier 4B
||6 - Fair (?)
Jun 25, 18 12:35am (PST)
Edited: Jul 15, 18 5:49pm
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Very heavy duty Solid-state stereo power amplifier. Used in a tonne of commercial applications (Theaters, Dance Clubs etc), and a fantastic choice for audio enthusiasts with power-hungry speakers.
Drives your choice of one pair or one single speaker, (the latter in bridged mode) speaker connections are by way of heavy duty 5-Way bindings suitable for banana plugs. Inputs are 1/4"". We can provide RCA adapters or RCA - 1/4"" Cables if desired.
Output power: 250W continuous into 8 ohms (24dBW), 400Wpc rms continuous into 4 ohms (23dBW); 800W continuous into 8 ohms in bridged mode (29dBW).
Current delivery: 16A continuous, 48A peak, per channel.
Frequency response: 1Hz–100kHz, ±3dB for 1W output. S/N Ratio: hum and noise, 108dB below rated output, 90dB IHF.
Input sensitivity: 1.4V for 250Wpc into 8 ohms.
Voltage gain: 30dB. THD+noise: 20Hz–20kHz, 0.01%.
IM distortion (60Hz+7kHz, 4:1, SMPTE method): less than 0.01% at rated power.
Damping factor: greater than 500 at 20Hz, at 8 ohms (equivalent to an output impedance of less than 0.016 ohms).
Input impedance: 50k ohms unbalanced, 30k ohms balanced. Polarity: non-inverting.
Dimensions: 16 3/16" (411mm) W by 7 1/8" (181mm) H by 13½" (343mm) D. Weight: 40.1 lbs (20.2kg) net.
Cosmetics are decent, with some light surface scratches due to stacking, and a couple of bent fins at the back of the unit. But with these amps, it's all about the performance, and the Bryston 4B is built like a tank, and will not disappoint.
This 4B has been freshly serviced, with a new heavy-duty power cord installed.
Originally retailed for $2200 USD. Have seen 4B's listed recently for $1200.
Asking just $995.
We package our components very carefully, and offer shipping via Canada Post Expedited, Insured, across North America.
We strive to ship your purchase within 48 hours (or less) of receiving your order.
Please drop us a line with your postal code / zip code to request a shipping quote.
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