Chord BerTTi – High-End Stereo Power Amplifier, 2 x 75 W Class AB

The Chord BerTTi is an extremely compact stereo power amplifier capable of delivering 75 W per channel into 8 Ohms thanks to a sophisticated Class AB design. Part of Chord Electronics' Table Top range, BerTTi combines amplifier technologies derived from the British brand's high-end models within an exceptionally compact chassis.

At the heart of the design is the renowned ULTIMA topology, based on dual-feed-forward error correction. This technology continuously monitors the electrical and thermal parameters of the power MOSFET devices, helping to reduce different forms of distortion and achieve extremely precise, dynamic and transparent sound reproduction.

ULTIMA Technology in a Compact Format

BerTTi draws on Chord Electronics' extensive experience in designing reference amplifiers and brings ULTIMA technology into a particularly compact format. The design is derived directly from the engineering philosophy developed for the company's high-end power amplifiers, delivering an impressive level of control and precision considering its dimensions.

The circuit uses an innovative sliding bias system, allowing the amplifier to operate in Class AB while maintaining high efficiency and controlling heat generation. The result is a power amplifier capable of combining dynamics, detail, speed and signal purity, even during extended listening sessions.

High-Frequency Power Supply

One of the distinguishing features of the Chord BerTTi is its power supply system. The amplifier uses two high-frequency power supplies specifically designed to provide the necessary power even during demanding musical passages.

There is also a dedicated auxiliary power supply for driving the MOSFETs manufactured to Chord Electronics specifications. The high-frequency technology makes it possible to achieve a compact, lightweight and efficient power supply, contributing to the amplifier's impressive dynamic capabilities.

Balanced and Unbalanced Connections

The Chord BerTTi offers extensive connection flexibility thanks to its balanced XLR inputs and unbalanced RCA inputs. The XLR inputs are particularly suitable for use with sources and preamplifiers featuring balanced outputs, while the RCA inputs allow easy integration into traditional Hi-Fi systems.

Speaker connections are handled by gold-plated speaker terminals, designed to provide a stable and reliable connection with speaker cables.

Chord Electronics Design

Despite its extremely compact dimensions, BerTTi features high-end construction. The chassis is made from solid aircraft-grade aluminium and precision-machined, using two substantial sections rather than simple metal panels.

The distinctive perforated structure promotes natural airflow through the amplifier, helping to cool the circuits and maintain performance during extended use.

Recommended Pairings

The Chord BerTTi has been designed to integrate perfectly with high-level digital components such as the Chord Hugo TT 2, which can be used as a digital preamplifier. This combination makes it possible to create an extremely compact yet highly capable system, delivering high resolution, detail and musicality.

The 75 W per channel into 8 Ohms, combined with its high current capability, allows BerTTi to drive a wide variety of speakers while providing precise control and impressive dynamic response.

Key Features

• 75 W per channel into 8 Ohms
• Fully stereo Class AB design
• Proprietary ULTIMA topology
• Dual-feed-forward error correction
• Power MOSFETs manufactured to Chord Electronics specifications
• Innovative sliding bias system
• Two high-frequency power supplies
• Balanced stereo XLR input
• Unbalanced stereo gold-plated RCA input
• Speaker outputs with gold-plated terminals
• Precision-machined aircraft-grade aluminium chassis
• Perforated structure to promote heat dissipation
• Available in Jett Black and Argent Silver finishes
• Ideal for pairing with the Chord Hugo TT 2

Why Choose Chord BerTTi

The Chord BerTTi is a particularly attractive solution for anyone looking for a high-end power amplifier without sacrificing an extremely compact footprint. The combination of Class AB operation, ULTIMA technology, high-frequency power supply and aluminium construction delivers high-level performance in a format ideally suited to modern and minimalist Hi-Fi systems.

The ability to use both XLR and RCA inputs makes BerTTi particularly versatile, while its high level of control and dynamic response make it an ideal partner for high-end digital systems and a wide range of loudspeakers.

Technical Specifications

Warranty

2 years