Overview

The Bryston 28B Cubed is the ultimate expression of monoblock amplification, designed to provide limitless power and absolute sonic transparency. It resolves the challenge of driving even the most inefficient, power-hungry loudspeakers by delivering a staggering 1000 watts of continuous power into 8 ohms. Featuring Bryston’s patented Cubed-series input circuitry and a massive, dedicated power supply, the 28B Cubed operates with surgical precision and a vanishingly low noise floor. This single-channel powerhouse ensures that high-demand musical peaks are handled with total ease, providing a level of dynamic scale and soundstage depth that represents the pinnacle of high-end audio engineering.

Simcoe Audio Video Insight

The 28B Cubed is the "heavyweight champion" of our amplifier collection. In our experience, there is simply no substitute for the sheer headroom this monoblock provides; even at low volumes, the music feels more structural and "solid" than with lesser amps. Because a single 1000W transformer is dedicated to just one speaker, the separation and imaging are holographic. We typically specify these for dedicated listening rooms where the owner has invested in flagship-level speakers and wants to ensure they are hearing the absolute limit of what their system can achieve.

Pro Tip: Best for driving large-scale, low-efficiency speakers in high-volume environments. To ensure this 1000W monster has the current it needs, we highly recommend a dedicated 20-amp circuit for each amplifier; this prevents the amp from being "choked" during massive orchestral swells or deep cinematic transients, allowing it to perform at its full rated potential.

More Details

Why It Wins

• Unrivaled Power Output: Delivers a massive 1000W into 8 ohms, ensuring that any speaker, regardless of its sensitivity or impedance, is driven with absolute authority.
• Salomie Input Stage: Utilizes a unique, patented circuit design that significantly reduces noise and improves linearity for a remarkably natural and transparent sound.
• Total Channel Isolation: As a dedicated monoblock, it provides infinite channel separation, resulting in a wider, deeper, and more precise stereo image when used in a pair.

What Makes It Different

The 28B Cubed stands apart by delivering brute-force power without sacrificing the delicate micro-details of a low-wattage audiophile amp. While many high-power amplifiers can sound "hard" or "veiled," the 28B Cubed maintains a neutral and airy presentation that reveals the true character of the recording. It features Bryston’s advanced SoftStart technology and a sophisticated protection circuit that monitors real-time health without ever touching the signal path. Its massive external heat sinks provide silent convection cooling, meaning you get high-current performance without the distraction of internal cooling fans.

Technical Highlights

• Quad-Complementary Output: Greatly reduces "switching noise" and improves low-level linearity, ensuring the amplifier stays sweet and musical from the first watt to the thousandth.
• High Damping Factor: Offers exceptional control over large woofer arrays, resulting in bass that is tight, textured, and perfectly timed.
• Selectable Gain: Features 23dB or 29dB gain settings, allowing for a perfect match with high-end preamplifiers and processors.

Buyers Guide

Who This Is For

• The No-Compromise Audiophile: Listeners who want the absolute final word in power, control, and transparency for their two-channel system.
• The Flagship Tower Owner: Ideal for owners of top-tier speakers from DALI, Paradigm, or Magico that require massive current to achieve their full dynamic potential.

What To Pair It With

• Bryston BP-17 Cubed Preamplifier: Ensures the signal remains uncolored and perfectly transparent before hitting the massive power stage of the 28B.
• High-End Power Conditioners: Given the 1000W capability, a high-current power conditioner will help maintain a clean and steady supply of electricity for maximum performance.

Alternative Options

If 1000W is more than your system requires, the Bryston 7B Cubed monoblock provides 600W of clean power in a smaller chassis. For those building a world-class stereo system in a single box, the Bryston 4B Cubed offers 300W per channel. If you are looking for a multi-channel solution for a high-end theater, the Bryston 9B Cubed provides a modular approach with up to five channels.