23 EQ Curves

Phono Equaliser · Made in Great Britain

AMR PH-77

Name: AMR PH-77
Brand: Abbingdon Music Research

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Overview

ThePH-77isareferencephonoequaliserwith23equalisationcurves,8gainlevels,64loadingsteps,threeswitchableinputs,NOSvalvecircuitry,and24-bit/96kHzvinylarchiving.

Key Features

Defining characteristics

AMR PH-77

23 Equalisation Curves
OptiEQ allows real-time remote selection of RIAA, Enhanced RIAA, Decca, Columbia, CCIR, AES, NAB, EMI, and other historical curves.
8 Gain Levels
Gain settings from 30dB to 72dB provide compatibility with cartridges from below 0.1mV to over 12mV.
64 Loading Steps
Wide resistive and capacitive loading options allow precise matching for moving coil and moving magnet cartridges.
Pure Valve Signal Path
A two-stage valve circuit uses NOS Mullard ECC81/12AT7 and Philips 5687WB valves in a Class A zero-feedback design.
Silver Leaf EQ Capacitors
Custom silver leaf capacitors selected to less than 1% tolerance form the equalisation network.
24-bit/96kHz Vinyl Archiving
A reference-grade analogue-to-digital converter allows high-quality USB transfer of vinyl to computer.

Vinyl, Correctly Equalised

Hear every record as it was cut

With 23 equalisation curves, the PH-77 allows historic and modern vinyl pressings to be replayed with the correct curve rather than forcing every record through standard RIAA.

Craftsmanship

Built for cartridges. Voiced for records. Designed for history.

The PH-77 treats vinyl replay as a complete historical and electrical challenge. Its EQ curves, gain levels, load settings, NOS valve complement, silver leaf capacitors, direct-coupled architecture, and USB archiving system allow records from different eras and labels to be reproduced with rare correctness and musicality.

23 EQ Curves8 Gain Levels64 LoadsNOS Valves

Every pressing has its own truth.

The PH-77 gives vinyl the equalisation, loading, gain, and valve signal path needed to reveal each record correctly.

Inside the Product

A guided look beneath the surface.

Select.

Three switchable inputs.

Multiple inputs support different cartridges, tonearms, mono/stereo setups, and MM or MC configurations.

Match.

Gain and loading precision.

Eight gain levels and 64 loading steps allow accurate cartridge optimisation.

Equalise.

OptiEQ curve library.

Twenty-three EQ curves enable correct playback of modern and historical pressings.

Preserve.

Analogue and digital output.

The PH-77 provides RCA, XLR, and USB output for both listening and 24-bit/96kHz vinyl archiving.

Select.

Three switchable inputs.

Multiple inputs support different cartridges, tonearms, mono/stereo setups, and MM or MC configurations.

Match.

Gain and loading precision.

Eight gain levels and 64 loading steps allow accurate cartridge optimisation.

Equalise.

OptiEQ curve library.

Twenty-three EQ curves enable correct playback of modern and historical pressings.

Preserve.

Analogue and digital output.

The PH-77 provides RCA, XLR, and USB output for both listening and 24-bit/96kHz vinyl archiving.

Technical Excellence

23 curves. 64 loads. Pure valve gain.

The PH-77 combines extensive cartridge matching, historic equalisation support, NOS valve circuitry, low-noise operation, and 24-bit/96kHz USB archiving in one reference phono equaliser.

EQ Curves

Loading Steps

Gain Levels

24/96

USB Archiving