Bryston 4B-NRB 250 Watts per Chanel

2 Bryston 4B NRB

At 250w per channel this professional quality amplifier will be able to drive just about any speakers with authority and precision.  Bryston is known for making amps equally suitable for home or studio which I'm my opinion says a lot about their accuracy and dependability, two of the most important aspects when choosing an amplifier for the recording studio.  

This particular unit is super clean and has been well cared for.  It has little signs of use, with no noticeable scratches or dents.  

On the back you'll find all sorts of options making this amp super flexible including selectors for mono/stereo operation, balanced single ended inputs and ground lift, which can be very handy in reducing hum or ground loops. 

On the front you'll find a power switch, rack handles, rack mounting holes and let/right channel indicator leds.  

The unit has been bench tested for both power output and THD and is working well within spec... no big surprise. 

Amp is available for audition in my private listening room in a Ridgewood NJ by appointment.  There is also pickup available in Union Square

Great review from stereophile

https://www.stereophile.com/solidpoweramps/592bryston/index.html

Some specs. 

Description: Solid-state stereo power amplifier. 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.

Price: $2095, $2295 with optional LED display; TXH-approved version costs $2245 (1992); $2397 (4B-ST, 1999); $3550 (4B-SST, 2007). Approximate number of dealers: 70 (1992); 200 (2007).

Manufacturer: Bryston Limited, P.O. Box 2170, 677 Neal Drive, Peterborough, Ontario K9J 7Y4, Canada. Tel: (705) 742-5325. Fax: (705) 742-0882. US: Bryston Service USA, 30 Coventry Street, Newport, VT 05855. Tel: (802) 334-1201. Fax: (802) 334-6658. Web: www.bryston.ca.

WHO WE ARE 

Skyfi.nyc is a small startup business specializing in the purchase, reconditioning and reselling of select high end audio equipment.  

We only buy equipment the we admire and are passionate about.  No mid-fi, no gimmicks and no junk.  

Each piece of equipment is cosmetically restored and fully tested in our well equipped lab by an engineer with 30+ year of experience in the Hifi world.  If it does not meet or exceed the original manufactures specification it will not be sold.  We are select about the equipment we purchase focusing in mostly analogue high build quality American and European built units which we find to have an incredible long lifespan while maintaining good sonics.  

Through our sister company, which is an authorized dealer for McIntosh, Audio Research, Sonus Faber, ClearAudio, Project and Sony ES, we have access to OEM parts and service support.  If you are local and are looking for any new equipment for the above mentioned manufacturers, please drop us a line as we can arrange both sales and professional installation in the tri-state area.    

TRADE IN POLICY 

We accept trade-ins of equal or lesser value under certain conditions just ask and let us know the exact model, condition and what accessories are included such as a box, remote, manual etc.  We will only consider high end equipment from mainstream manufacturers such as McIntosh, Mark Levinson, Audio Research, Krell, etc. and would typically pass on displays, projectors, receivers, dated processors and mid-fi equipment of any type.  We will offer a fair value for your equipment but keep in mind we are running a business and will need to be able to sell the equipment at a profit after investing a great deal of time and resources in testing, certifying, repairing, cleaning and packaging the incoming equipment.  If your looking for top dollar we suggest attempting to sell it directly to an end user.  

HOW TO VISIT US

We are currently operating from a residence in Ridgewood NJ.  Your welcomed to make an appointment if there is a piece of equipment you would like to see in operation before or after purchase.  We have a well equipped, dedicated listening room with tons of equipment of all makes and models.  We are not a store so please don’t make an appointment if your just curious as how a speaker or piece of equipped sounds.  In essence no tire kickers please.  

If you are in NYC and cannot make it out to Ridgewood, we can arrange pickup in Union Square (14th Street) after the purchase.   You can call or text  646 852 2073 with any questions or to schedule an appointment.  

Thanks for looking and please send us your email address if you would like to receive a list of the equipment we receive from time to time.  We promise not to bombard you with junk email.