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Meridian 551 Integrated Amplifier

The Meridian 551 Integrated Amplifier uses a dual-mono construction similar to the 556 and 557 Stereo Power Amplifiers but includes a high-quality preamplifier similar to the 501.

The preamplifier provides six audio inputs, each of which can be individually adjusted for sensitivity, and identified on the four-character alphanumeric display. A very high quality MC or MM phono stage is available as an option for the dedicated LP input.

The power amplifier uses a unique feedback topology and precision local error correction system. It is designed and constructed in dual mono format, including a massive twin wound toroidal transformer.

A separate headphone amplifier and a speaker on/off facility allow you to enjoy music without disturbing others.

Technical Specification

Distortion: Less than 0.05%

Signal/Noise: Less than –90dB for high-level analogue inputs. Less than –70dB for MM input. Less than –60dB for MC input.

MM option: Sensitivity adjustable 0.5 – 3mV for 5cm/s @ 1kHz. Overload point 47mV @ 1kHz. Cartridge load 47k Ohms 100pF.

MC option: Sensitivity adjustable 38 – 210µV for 5cm/s @ 1kHz. Cartridge load 220 Ohms 10nF.

Inputs: 5 phono inputs, sensitivity adjustable 27 – 150mV. Input impedance 20k.

Outputs: 2 outputs 55W per channel into 8 Ohms, 80W per channel into 4 ohms. Volume control 99 steps of 1dB

Tape output: 1.5V

Headphone: 2V maximum output.

Comms: Two 5-pin 240° DIN sockets, RS232 interface.

Construction: Black textured enamel and glass finish. Side heatsinks from black painted aluminium.

Dimensions: 88mm (3.46in) H, 321mm (12.64) W, 332mm (13.07) D. Weight 10kg (20lbs)

Controls: Front-panel controls for Source, Copy, Spkrs, Mute, Display, Volume up/down, Off.

Front Display: 4-character dot matrix LED display.

Use 551 with:

M60 Speaker

M33 Speaker

507 CD Player

596 DVD Player

504 FM Tuner

MSR Remote

User Manual

Data Sheet

Brochure

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