Local pickup only. Bryston 4B-ST, 2x 250W or 800W bridged. Fully recapped and upgraded the output stage to 4B-SST topology, which further improves the current capacity and damping factor. Please refer to the last picture for the modification details. This is virtually a 4B-SST with favored metal power transistors.

Sonics 600X (Bryston 4B) Hi-Fidelity IMAX Amplifier GREAT CONDITIONINCREDIBLE SOUND FROM BRYSTON COMPONENTSREMOVED FROM LOCAL MUSEUM DURING RENOVATION Sonics 600X (Bryston 4B) [ Listing is for 1 amp - however we have 2 units total available ] Overview: Sonics was the American company that supplied the audio systems for the IMAX & OMNIMAX Theaters. Their amplifiers were built by the renowned Bryston in Ontario Canada and Sonics added their front & rear panels along with input circuitry. Over the years these amps have found their way into the consumer/used market and audiophiles jump at the opportunity to own one of these legendary amplifiers. The Sonics 600X is almost identical to a Bryston 4B - they were basically rebadged with Sonics front/back plates with slightly modified circuitry for their use with IMAX systems. The Sonics 600X is a three channel power amplifier with VHF/HF/LF crossover. It is rated at 120 watts/channel RMS @ 8 Ohms and 200 watts/channel RMS @ 4 ohm. The two main channels can be bridged for 400w mono output @ 8 ohm. As a triple-mono amp, all three channels are in one chassis, and each channel has their own toroidal power transformer and power supply capacitors. The Plitron tranformers were custom-made for Bryston (82 VCT @ 2.75A, or 225 watts). The power caps for each channel consist of two 10,000µ, 63V capacitors. The rail is ± 55 V and each channel has 30.5 Joules of power supply energy storage. The back panel has a detachable grounded (three-prong) power receptacle, (1) XLR female input, XLR male looping output for LF/subwoofer, and (4) post/banana jacks for +/- on each of the two main channels. Unit come with new 6x30mm 150V fast-blow fuses: UNDERSTAND WHAT YOU ARE PURCHASING:While we cannot guarantee any amp performs 100% as it did when it left Brystons manufacturing facility, each unit has been tested for power handling, clipping, and clean audio on each channel. Some audiophiles choose to send their amps to Bryston for full refurbishment (contact Mike Pickett @ Bryston for details)If you would like us to ship directly to Bryston we are happy to coordinate, provide full tracking info, and save you the additional shipping costs. If a return is authorized, the buyer will assume all return shipping costs. These things are HEAVY. Additional Info: A Bryston by any other name... https://www.audiocircle.com/index.php?topic=88518.0 Reverb.com - Sonics (Bryston) Power Amplifiers https://reverb.com/item/9701077-sonics-bryston-power-amplifier-800x-mono-500w-8-or-800w-4 Sonics amps by Bryston https://www.audiocircle.com/index.php?topic=139044.0

Sonics 600X (Bryston 4B) Hi-Fidelity IMAX Amplifier GREAT CONDITIONINCREDIBLE SOUND FROM BRYSTON COMPONENTSREMOVED FROM LOCAL MUSEUM DURING RENOVATION Sonics 600X (Bryston 4B) [ Listing is for 1 amp - however we have 2 units total available ] Overview: Sonics was the American company that supplied the audio systems for the IMAX & OMNIMAX Theaters. Their amplifiers were built by the renowned Bryston in Ontario Canada and Sonics added their front & rear panels along with input circuitry. Over the years these amps have found their way into the consumer/used market and audiophiles jump at the opportunity to own one of these legendary amplifiers. The Sonics 600X is almost identical to a Bryston 4B - they were basically rebadged with Sonics front/back plates with slightly modified circuitry for their use with IMAX systems. The Sonics 600X is a three channel power amplifier with VHF/HF/LF crossover. It is rated at 120 watts/channel RMS @ 8 Ohms and 200 watts/channel RMS @ 4 ohm. The two main channels can be bridged for 400w mono output @ 8 ohm. As a triple-mono amp, all three channels are in one chassis, and each channel has their own toroidal power transformer and power supply capacitors. The Plitron tranformers were custom-made for Bryston (82 VCT @ 2.75A, or 225 watts). The power caps for each channel consist of two 10,000µ, 63V capacitors. The rail is ± 55 V and each channel has 30.5 Joules of power supply energy storage. The back panel has a detachable grounded (three-prong) power receptacle, (1) XLR female input, XLR male looping output for LF/subwoofer, and (4) post/banana jacks for +/- on each of the two main channels. Unit come with new 6x30mm 150V fast-blow fuses: UNDERSTAND WHAT YOU ARE PURCHASING:While we cannot guarantee any amp performs 100% as it did when it left Brystons manufacturing facility, each unit has been tested for power handling, clipping, and clean audio on each channel. Some audiophiles choose to send their amps to Bryston for full refurbishment (contact Mike Pickett @ Bryston for details)If you would like us to ship directly to Bryston we are happy to coordinate, provide full tracking info, and save you the additional shipping costs. If a return is authorized, the buyer will assume all return shipping costs. These things are HEAVY. Additional Info: A Bryston by any other name... https://www.audiocircle.com/index.php?topic=88518.0 Reverb.com - Sonics (Bryston) Power Amplifiers https://reverb.com/item/9701077-sonics-bryston-power-amplifier-800x-mono-500w-8-or-800w-4 Sonics amps by Bryston https://www.audiocircle.com/index.php?topic=139044.0

Local pickup only. Please contact for other delivery option along the east coast. Bryston 4B-ST, 2x 250W or 800W bridged. Fully recapped and upgraded the output stage to 4B-SST topology, which further improves the current capacity and damping factor. Please refer to the last picture for the modification details. This is virtually a 4B-SST with favored metal-can power transistors.

Sonics 600X (Bryston 4B) Hi-Fidelity IMAX Amplifier GREAT CONDITIONINCREDIBLE SOUND FROM BRYSTON COMPONENTSREMOVED FROM LOCAL MUSEUM DURING RENOVATION Sonics 600X (Bryston 4B) [ Listing is for 1 amp - however we have 2 units total available ] Overview: Sonics was the American company that supplied the audio systems for the IMAX & OMNIMAX Theaters. Their amplifiers were built by the renowned Bryston in Ontario Canada and Sonics added their front & rear panels along with input circuitry. Over the years these amps have found their way into the consumer/used market and audiophiles jump at the opportunity to own one of these legendary amplifiers. The Sonics 600X is almost identical to a Bryston 4B - they were basically rebadged with Sonics front/back plates with slightly modified circuitry for their use with IMAX systems. The Sonics 600X is a three channel power amplifier with VHF/HF/LF crossover. It is rated at 120 watts/channel RMS @ 8 Ohms and 200 watts/channel RMS @ 4 ohm. The two main channels can be bridged for 400w mono output @ 8 ohm. As a triple-mono amp, all three channels are in one chassis, and each channel has their own toroidal power transformer and power supply capacitors. The Plitron tranformers were custom-made for Bryston (82 VCT @ 2.75A, or 225 watts). The power caps for each channel consist of two 10,000µ, 63V capacitors. The rail is ± 55 V and each channel has 30.5 Joules of power supply energy storage. The back panel has a detachable grounded (three-prong) power receptacle, (1) XLR female input, XLR male looping output for LF/subwoofer, and (4) post/banana jacks for +/- on each of the two main channels. Unit come with new 6x30mm 150V fast-blow fuses: UNDERSTAND WHAT YOU ARE PURCHASING:While we cannot guarantee any amp performs 100% as it did when it left Brystons manufacturing facility, each unit has been tested for power handling, clipping, and clean audio on each channel. Some audiophiles choose to send their amps to Bryston for full refurbishment (contact Mike Pickett @ Bryston for details)If you would like us to ship directly to Bryston we are happy to coordinate, provide full tracking info, and save you the additional shipping costs. If a return is authorized, the buyer will assume all return shipping costs. These things are HEAVY. Additional Info: A Bryston by any other name... https://www.audiocircle.com/index.php?topic=88518.0 Reverb.com - Sonics (Bryston) Power Amplifiers https://reverb.com/item/9701077-sonics-bryston-power-amplifier-800x-mono-500w-8-or-800w-4 Sonics amps by Bryston https://www.audiocircle.com/index.php?topic=139044.0

Sonics 600X (Bryston 4B) Hi-Fidelity IMAX Amplifier TESTED BUT CHANNEL A IS WEAKER AND THERE ARE ALMOST NO LOW FREQUENCIESSOLD AS-IS FOR PARTS/REPAIRNO RETURNS Sonics 600X (Bryston 4B) Overview: Sonics was the American company that supplied the audio systems for the IMAX & OMNIMAX Theaters. Their amplifiers were built by the renowned Bryston in Ontario Canada and Sonics added their front & rear panels along with input circuitry. Over the years these amps have found their way into the consumer/used market and audiophiles jump at the opportunity to own one of these legendary amplifiers. The Sonics 600X is almost identical to a Bryston 4B - they were basically rebadged with Sonics front/back plates with slightly modified circuitry for their use with IMAX systems. The Sonics 600X is a three channel power amplifier with VHF/HF/LF crossover. It is rated at 120 watts/channel RMS @ 8 Ohms and 200 watts/channel RMS @ 4 ohm. The two main channels can be bridged for 400w mono output @ 8 ohm. As a triple-mono amp, all three channels are in one chassis, and each channel has their own toroidal power transformer and power supply capacitors. The Plitron tranformers were custom-made for Bryston (82 VCT @ 2.75A, or 225 watts). The power caps for each channel consist of two 10,000µ, 63V capacitors. The rail is ± 55 V and each channel has 30.5 Joules of power supply energy storage. The back panel has a detachable grounded (three-prong) power receptacle, (1) XLR female input, XLR male looping output for LF/subwoofer, and (4) post/banana jacks for +/- on each of the two main channels. ! PLEASE READ !UNDERSTAND WHAT YOU ARE PURCHASING:This is a genuine Sonics/Bryston amp but not operating properly and being sold for parts/repair.There are NO RETURNS ON THIS ITEM Additional Info: A Bryston by any other name... https://www.audiocircle.com/index.php?topic=88518.0 Reverb.com - Sonics (Bryston) Power Amplifiers https://reverb.com/item/9701077-sonics-bryston-power-amplifier-800x-mono-500w-8-or-800w-4 Sonics amps by Bryston https://www.audiocircle.com/index.php?topic=139044.0

Sonics 600X (Bryston 4B) Hi-Fidelity IMAX Amplifier GREAT CONDITIONINCREDIBLE SOUND FROM BRYSTON COMPONENTSREMOVED FROM LOCAL MUSEUM DURING RENOVATION Sonics 600X (Bryston 4B) [ Listing is for 1 amp - however we have 2 units total available ] Overview: Sonics was the American company that supplied the audio systems for the IMAX & OMNIMAX Theaters. Their amplifiers were built by the renowned Bryston in Ontario Canada and Sonics added their front & rear panels along with input circuitry. Over the years these amps have found their way into the consumer/used market and audiophiles jump at the opportunity to own one of these legendary amplifiers. The Sonics 600X is almost identical to a Bryston 4B - they were basically rebadged with Sonics front/back plates with slightly modified circuitry for their use with IMAX systems. The Sonics 600X is a three channel power amplifier with VHF/HF/LF crossover. It is rated at 120 watts/channel RMS @ 8 Ohms and 200 watts/channel RMS @ 4 ohm. The two main channels can be bridged for 400w mono output @ 8 ohm. As a triple-mono amp, all three channels are in one chassis, and each channel has their own toroidal power transformer and power supply capacitors. The Plitron tranformers were custom-made for Bryston (82 VCT @ 2.75A, or 225 watts). The power caps for each channel consist of two 10,000µ, 63V capacitors. The rail is ± 55 V and each channel has 30.5 Joules of power supply energy storage. The back panel has a detachable grounded (three-prong) power receptacle, (1) XLR female input, XLR male looping output for LF/subwoofer, and (4) post/banana jacks for +/- on each of the two main channels. Unit come with new 6x30mm 150V fast-blow fuses: UNDERSTAND WHAT YOU ARE PURCHASING:While we cannot guarantee any amp performs 100% as it did when it left Brystons manufacturing facility, each unit has been tested for power handling, clipping, and clean audio on each channel. Some audiophiles choose to send their amps to Bryston for full refurbishment (contact Mike Pickett @ Bryston for details)If you would like us to ship directly to Bryston we are happy to coordinate, provide full tracking info, and save you the additional shipping costs. If a return is authorized, the buyer will assume all return shipping costs. These things are HEAVY. Additional Info: A Bryston by any other name... https://www.audiocircle.com/index.php?topic=88518.0 Reverb.com - Sonics (Bryston) Power Amplifiers https://reverb.com/item/9701077-sonics-bryston-power-amplifier-800x-mono-500w-8-or-800w-4 Sonics amps by Bryston https://www.audiocircle.com/index.php?topic=139044.0

Bryston 4Be Amplifier, Never rack mounted, Very, Very Clean, low hours... Factory shipping box. This is the super rare 4Be pro version. The e is for engineering. This model was just before the NRB.It has XLR and 1/4 TRS connections. I will include a pair of gold-plated 1/4 TRS to RCA adaptors also. The pro models have the potentiometers in the front, just above the number 4, to adjust the right and left channels independently. Brystons 4B stereo power amplifier consists of two amplifier modules, each with its own ±85v power supply, which can be operated independently or combined (MONO mode) to form a single 800 watt amplifier (8? load) in a 3 rack height chassis. Operated independently (DUAL mode) each channel can deliver 250 watts into 8? (or 400 watts into 4?). Each of the two amplifier modules use 8 of Brystons custom power transistors, for a total of 16 output devices per 4B. It has not been used for about 15 years. Sent to Bryston Canada early this year for a complete checkup. I wanted them to make sure it was operating at factory specs. Received it back in June. A copy of the receipt is included. I only opened the box to powered it on and take photos. Played it for about an hour. It sounds fantastic!!! You will not find a cleaner 4b amplifier. Only thing it needs is some new rubber stick on feet on the bottom. You can find them here on eBay pretty cheap. Never been rack mounted, no scratches on the front panel, top plate or sides. Please see all photos. Does not come with a power cord. FREE SHIPPING!!! All states except Hawaii and Alaska... No international shipping!!! Sorry.

Sonics 600X (Bryston 4B) Hi-Fidelity IMAX Amplifier GREAT CONDITIONINCREDIBLE SOUND FROM BRYSTON COMPONENTSREMOVED FROM LOCAL MUSEUM DURING RENOVATION Sonics 600X (Bryston 4B) [ Listing is for 1 amp - however we have 2 units total available ] Overview: Sonics was the American company that supplied the audio systems for the IMAX & OMNIMAX Theaters. Their amplifiers were built by the renowned Bryston in Ontario Canada and Sonics added their front & rear panels along with input circuitry. Over the years these amps have found their way into the consumer/used market and audiophiles jump at the opportunity to own one of these legendary amplifiers. The Sonics 600X is almost identical to a Bryston 4B - they were basically rebadged with Sonics front/back plates with slightly modified circuitry for their use with IMAX systems. The Sonics 600X is a three channel power amplifier with VHF/HF/LF crossover. It is rated at 120 watts/channel RMS @ 8 Ohms and 200 watts/channel RMS @ 4 ohm. The two main channels can be bridged for 400w mono output @ 8 ohm. As a triple-mono amp, all three channels are in one chassis, and each channel has their own toroidal power transformer and power supply capacitors. The Plitron tranformers were custom-made for Bryston (82 VCT @ 2.75A, or 225 watts). The power caps for each channel consist of two 10,000µ, 63V capacitors. The rail is ± 55 V and each channel has 30.5 Joules of power supply energy storage. The back panel has a detachable grounded (three-prong) power receptacle, (1) XLR female input, XLR male looping output for LF/subwoofer, and (4) post/banana jacks for +/- on each of the two main channels. Unit come with new 6x30mm 150V fast-blow fuses: UNDERSTAND WHAT YOU ARE PURCHASING:While we cannot guarantee any amp performs 100% as it did when it left Brystons manufacturing facility, each unit has been tested for power handling, clipping, and clean audio on each channel. Some audiophiles choose to send their amps to Bryston for full refurbishment (contact Mike Pickett @ Bryston for details)If you would like us to ship directly to Bryston we are happy to coordinate, provide full tracking info, and save you the additional shipping costs. If a return is authorized, the buyer will assume all return shipping costs. These things are HEAVY. Additional Info: A Bryston by any other name... https://www.audiocircle.com/index.php?topic=88518.0 Reverb.com - Sonics (Bryston) Power Amplifiers https://reverb.com/item/9701077-sonics-bryston-power-amplifier-800x-mono-500w-8-or-800w-4 Sonics amps by Bryston https://www.audiocircle.com/index.php?topic=139044.0

Sonics 600X (Bryston 4B) Hi-Fidelity IMAX Amplifier TESTED BUT CHANNEL A IS WEAKER AND THERE ARE ALMOST NO LOW FREQUENCIESSOLD AS-IS FOR PARTS/REPAIRNO RETURNS Sonics 600X (Bryston 4B) Overview: Sonics was the American company that supplied the audio systems for the IMAX & OMNIMAX Theaters. Their amplifiers were built by the renowned Bryston in Ontario Canada and Sonics added their front & rear panels along with input circuitry. Over the years these amps have found their way into the consumer/used market and audiophiles jump at the opportunity to own one of these legendary amplifiers. The Sonics 600X is almost identical to a Bryston 4B - they were basically rebadged with Sonics front/back plates with slightly modified circuitry for their use with IMAX systems. The Sonics 600X is a three channel power amplifier with VHF/HF/LF crossover. It is rated at 120 watts/channel RMS @ 8 Ohms and 200 watts/channel RMS @ 4 ohm. The two main channels can be bridged for 400w mono output @ 8 ohm. As a triple-mono amp, all three channels are in one chassis, and each channel has their own toroidal power transformer and power supply capacitors. The Plitron tranformers were custom-made for Bryston (82 VCT @ 2.75A, or 225 watts). The power caps for each channel consist of two 10,000µ, 63V capacitors. The rail is ± 55 V and each channel has 30.5 Joules of power supply energy storage. The back panel has a detachable grounded (three-prong) power receptacle, (1) XLR female input, XLR male looping output for LF/subwoofer, and (4) post/banana jacks for +/- on each of the two main channels. ! PLEASE READ !UNDERSTAND WHAT YOU ARE PURCHASING:This is a genuine Sonics/Bryston amp but not operating properly and being sold for parts/repair.There are NO RETURNS ON THIS ITEM Additional Info: A Bryston by any other name... https://www.audiocircle.com/index.php?topic=88518.0 Reverb.com - Sonics (Bryston) Power Amplifiers https://reverb.com/item/9701077-sonics-bryston-power-amplifier-800x-mono-500w-8-or-800w-4 Sonics amps by Bryston https://www.audiocircle.com/index.php?topic=139044.0

Sonics 600X (Bryston 4B) Hi-Fidelity IMAX Amplifier TESTED BUT CHANNEL A IS WEAKER AND THERE ARE ALMOST NO LOW FREQUENCIESSOLD AS-IS FOR PARTS/REPAIRNO RETURNS Sonics 600X (Bryston 4B) Overview: Sonics was the American company that supplied the audio systems for the IMAX & OMNIMAX Theaters. Their amplifiers were built by the renowned Bryston in Ontario Canada and Sonics added their front & rear panels along with input circuitry. Over the years these amps have found their way into the consumer/used market and audiophiles jump at the opportunity to own one of these legendary amplifiers. The Sonics 600X is almost identical to a Bryston 4B - they were basically rebadged with Sonics front/back plates with slightly modified circuitry for their use with IMAX systems. The Sonics 600X is a three channel power amplifier with VHF/HF/LF crossover. It is rated at 120 watts/channel RMS @ 8 Ohms and 200 watts/channel RMS @ 4 ohm. The two main channels can be bridged for 400w mono output @ 8 ohm. As a triple-mono amp, all three channels are in one chassis, and each channel has their own toroidal power transformer and power supply capacitors. The Plitron tranformers were custom-made for Bryston (82 VCT @ 2.75A, or 225 watts). The power caps for each channel consist of two 10,000µ, 63V capacitors. The rail is ± 55 V and each channel has 30.5 Joules of power supply energy storage. The back panel has a detachable grounded (three-prong) power receptacle, (1) XLR female input, XLR male looping output for LF/subwoofer, and (4) post/banana jacks for +/- on each of the two main channels. ! PLEASE READ !UNDERSTAND WHAT YOU ARE PURCHASING:This is a genuine Sonics/Bryston amp but not operating properly and being sold for parts/repair.There are NO RETURNS ON THIS ITEM Additional Info: A Bryston by any other name... https://www.audiocircle.com/index.php?topic=88518.0 Reverb.com - Sonics (Bryston) Power Amplifiers https://reverb.com/item/9701077-sonics-bryston-power-amplifier-800x-mono-500w-8-or-800w-4 Sonics amps by Bryston https://www.audiocircle.com/index.php?topic=139044.0

Sonics 600X (Bryston 4B) Hi-Fidelity IMAX Amplifier GREAT CONDITIONINCREDIBLE SOUND FROM BRYSTON COMPONENTSREMOVED FROM LOCAL MUSEUM DURING RENOVATION Sonics 600X (Bryston 4B) [ Listing is for 1 amp - however we have 2 units total available ] Overview: Sonics was the American company that supplied the audio systems for the IMAX & OMNIMAX Theaters. Their amplifiers were built by the renowned Bryston in Ontario Canada and Sonics added their front & rear panels along with input circuitry. Over the years these amps have found their way into the consumer/used market and audiophiles jump at the opportunity to own one of these legendary amplifiers. The Sonics 600X is almost identical to a Bryston 4B - they were basically rebadged with Sonics front/back plates with slightly modified circuitry for their use with IMAX systems. The Sonics 600X is a three channel power amplifier with VHF/HF/LF crossover. It is rated at 120 watts/channel RMS @ 8 Ohms and 200 watts/channel RMS @ 4 ohm. The two main channels can be bridged for 400w mono output @ 8 ohm. As a triple-mono amp, all three channels are in one chassis, and each channel has their own toroidal power transformer and power supply capacitors. The Plitron tranformers were custom-made for Bryston (82 VCT @ 2.75A, or 225 watts). The power caps for each channel consist of two 10,000µ, 63V capacitors. The rail is ± 55 V and each channel has 30.5 Joules of power supply energy storage. The back panel has a detachable grounded (three-prong) power receptacle, (1) XLR female input, XLR male looping output for LF/subwoofer, and (4) post/banana jacks for +/- on each of the two main channels. Unit come with new 6x30mm 150V fast-blow fuses: UNDERSTAND WHAT YOU ARE PURCHASING:While we cannot guarantee any amp performs 100% as it did when it left Brystons manufacturing facility, each unit has been tested for power handling, clipping, and clean audio on each channel. Some audiophiles choose to send their amps to Bryston for full refurbishment (contact Mike Pickett @ Bryston for details)If you would like us to ship directly to Bryston we are happy to coordinate, provide full tracking info, and save you the additional shipping costs. If a return is authorized, the buyer will assume all return shipping costs. These things are HEAVY. Additional Info: A Bryston by any other name... https://www.audiocircle.com/index.php?topic=88518.0 Reverb.com - Sonics (Bryston) Power Amplifiers https://reverb.com/item/9701077-sonics-bryston-power-amplifier-800x-mono-500w-8-or-800w-4 Sonics amps by Bryston https://www.audiocircle.com/index.php?topic=139044.0

Bryston 4B 250 Watt 2 Channel Power Amplifier - XLR inputs - pro version Unit works great, minimal exterior wear Ships FEDEX, CONUS only. Worldwide shipping via ebay international shipping program.