4B SST3
The Bryston 4B SST3 can be bridged to operate as a single 900W mono channel, giving systems requiring greater output a switchable configuration. Its active, extremely low-distortion input buffer accepts balanced and single-ended connections, while selectable 23dB or 29dB gain and fanless convection cooling support flexible, silent operation.
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£1,600.00 initial 20% deposit then £213.33 per month for 30 months. Other finance terms available. Finance subject to status.
Spread the cost with interest-free monthly payments through Novuna Consumer Finance, subject to status and affordability. Available on qualifying purchases. Terms and conditions apply.
The Bryston 4B SST³ is a power amplifier designed with low distortion, substantial power delivery and long-term reliability in mind. Its circuitry combines an active, extremely low-distortion input buffer with balanced and single-ended inputs, allowing integration with a range of high-end audio systems.
Selectable 23dB or 29dB gain enables the amplifier to suit different system requirements. Regulated power supplies serve all voltage-gain stages, while each channel has an independent power supply to support channel separation and consistent operation under demanding conditions.
The 4B SST³ has a fully aluminium chassis with convection cooling, so it requires no fans or other moving parts. This allows silent operation and supports the amplifier’s reliability and durability.
A bridging switch configures the amplifier as a single 900W mono channel for applications requiring substantially greater output.
- Active, extremely low-distortion input buffer
- Balanced and single-ended inputs
- Selectable 23dB / 29dB gain
- Regulated power supplies for all voltage-gain stages
- Independent power supplies for each channel
- Fanless, convection-cooled aluminium chassis
- No moving parts
- Switchable bridged operation up to 900W mono
Available with silver or black faceplates. It can be specified in 17-inch format without handles or 19-inch format with handles. A black Pro Edition with rack-mount capability is also available.
| Power Output Per Channel (Watts) | 8Ω Load: 300, 4Ω Load: 500, Bridged Mono 8Ω Load: 900 |
|---|---|
| Gain | High: 29dB 28.28 V/V, Low: 23dB 14.14 V/V |
| Sensitivity (into 8Ω) | High: 1.00V 100W, High: 1.73V 300W, Low: 2.00V 100W, Low: 3.46V 300W |
| Input Impedance - Individual Mode | Single Ended ≈30kΩ, Balanced + ≈30kΩ, Balanced - ≈6kΩ |
| IMD | ≤0.005%, Typ. ≤0.002% |
| Noise | SE: High: 29dB |
| SE input shorted, Balanced open Weighted, filter: 22Hz-22kHz | SE: Low: 23dB |
| Slew Rate | Individual Mode >60V / μS, Bridged Mode >120 / μS |
| Bandwidth | 0-3dB 100kHz |
| Frequency Response | 0±0.1dB 20Hz - 20kHz |
| Damping | 20Hz, 8Ω >500 |
| Weight | Pounds: 57.8; Kilograms: 26.2 |
| Delivery | UK delivery available |
|---|---|
| Lead time | Agreed personally, finish and stock dependent |
| Warranty | 20 years warranty |
| Trade-in | Part exchange available (subject to conditions) |
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Jordan Acoustics Ltd is authorised and regulated by the Financial Conduct Authority. We are a credit broker and not a lender. Credit is provided by Novuna Consumer Finance. Finance is subject to status and affordability. Terms and conditions apply.
