Rotel RB-805BX

£175.00

1 in stock

8504

Rotel RB-850 Stereo Power Amplifier — Grade A (Great) | Dual Mono Construction | Bridgeable | Checked by Andrew

The Rotel RB-850 is a highly regarded dedicated stereo power amplifier from the late 1980s, built to genuine dual mono construction with two separate toroidal transformers, one per channel. It earned a Best Buy award from Hi-Fi Choice magazine in 1989 when paired with its matching RC-850 preamplifier, and has developed a lasting reputation among owners for driving difficult speaker loads cleanly and with a wide, well-defined soundstage — a direct result of its dual mono design. This unit has been checked by Andrew in our workshop.

Condition: Grade A — Great. Please refer to our photographs for a full assessment of cosmetic condition.

1 in stock

Description

Key Features

The RB-850’s genuine dual mono construction, with independent power supplies for each channel, is the defining feature behind its performance: this arrangement keeps the channels fully independent of one another, contributing to the wide, stable stereo soundstage the amplifier is well known for among owners and reviewers alike. It can be run as a conventional stereo power amplifier or switched to bridged mono operation via a rear-panel switch, roughly tripling available output into a single channel for use in a bi-amped or mono subwoofer application. As a dedicated power amplifier with no volume control or source switching, the RB-850 is designed to be partnered with a separate preamplifier or a pre-out equipped integrated amplifier.

Technical Specifications
(Source: hifi-wiki.com — Rotel RB-850 documentation; HiFi Engine — Rotel RB-850 manual archive)

Type: Stereo power amplifier, dual mono construction
Power output: 50 watts per channel into 8Ω (stereo), 75W per channel into 4Ω
Bridged mono output: 150W into 8Ω
Peak power: 100W into 4Ω, 150W into 2Ω
Frequency response: 15Hz–100kHz
Total harmonic distortion: 0.03%
Damping factor: 280
Input sensitivity: 1V
Signal-to-noise ratio: 116dB
Speaker load impedance: 4Ω to 16Ω
Dimensions (W x H x D): 444 x 86 x 336mm
Weight: 9kg
Country of Origin: Japan

Why Buy From Us

With over 40 years of experience in the Hi-Fi industry, we are well placed to assess and test equipment of this type. Every item we list is fully inspected and tested before sale — this unit was checked by Andrew in our workshop.

When you buy from us you can expect:

Full inspection and testing prior to listing — not simply a visual check
A 3-month guarantee on every item we sell
Transparent descriptions with no omissions
Professional packaging to ensure safe delivery
After-sales support available by phone or email should you have any questions

Summary

A genuinely great-condition example of a highly regarded dual mono power amplifier, well suited to driving demanding speaker loads with a wide, stable soundstage. This is a single-unit listing. Please feel free to get in touch with any questions prior to purchase.