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Overview
TheCD-77isareferencecompactdiskprocessorbuiltaroundthePhilipsTDA1541AmultibitDAC,OptiSample®bit-perfectplayback,andano-negative-feedbackNOSvalveanaloguestage.
Key Features
Defining characteristics
AMR CD-77
Philips TDA1541A DAC
The CD-77 uses the legendary Philips TDA1541A multibit DAC as the heart of its digital engine.
OptiSample® Playback Modes
Digital Master, oversampling, and upsampling options allow the listener to select the most suitable presentation.
OptiClockLock®
Synchronises internal clocks to a military-grade temperature-compensated master clock to reduce jitter and unwanted beat frequencies.
OptiDrive® Transport
A custom top-loading transport using Sony K-series laser pickup, Philips CD-18 servo system, direct-drive motor, and CNC-machined CD well.
OptiValve® Analogue Stage
A no-negative-feedback NOS valve analogue stage provides high gain, low distortion, and low output impedance.
OptiChassis® Copper Construction
A pure copper inner chassis and resonance-controlled structure preserve mechanical and electrical stability.
The emotion of vinyl. The convenience of CD.
The CD-77 brings extended highs, open mid-tones, and deep detailed bass to compact disc playback through multibit conversion and a dedicated valve analogue stage.
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Craftsmanship
Top-loading precision. Multibit soul. Valve output.
The CD-77 combines a CNC-machined top-loading mechanism, a Philips TDA1541A DAC, user-selectable sampling modes, military-grade clocking, premium film capacitors, AMR Music Capacitors, and NOS valve analogue circuitry to create a compact disc processor of rare musical density.
Rediscover compact disc.
The CD-77 turns the compact disc into a deeply musical source through legendary multibit conversion and valve analogue output.
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Read with precision.
OptiDrive® transport.
A custom top-loading transport extracts disc data using AMR’s mechanically stable transport platform.
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Process with choice.
OptiSample® modes.
Digital Master I and II, oversampling, and upsampling modes provide different routes to musical truth.
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Convert with legend.
TDA1541A multibit DAC.
The Philips TDA1541A gives the CD-77 its multibit heart and natural musical character.
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Output with valves.
OptiValve® analogue stage.
A NOS valve output architecture completes the signal path with organic flow and low output impedance.
Technical Excellence
Bit-perfect replay from a multibit legend.
The CD-77 offers Direct Master I and II, oversampling, and upsampling modes, with balanced and single-ended analogue outputs, NOS valve stages, and over 100dB A-weighted signal-to-noise performance.
192kHz
Upsampling Mode
>100dB
Signal-to-Noise
<100Ω
Output Impedance
28kg
Net Weight
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The disc made emotional again
Extended highs, open mid-tones, and deep bass give CD playback renewed presence.
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Multibit conversion with valve expression
The CD-77 combines the TDA1541A with a dedicated NOS valve analogue stage.
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Bit-perfect when it matters
Digital Master modes preserve the signal without artificial manipulation.
Specifications - AMR CD-77
- Configuration
- Compact Disk Processor
- DAC
- Philips TDA1541A Multibit DAC
- Operation Modes
- Direct Master I, Direct Master II, Oversampling 2×, Oversampling 4×, Upsampling 96kHz, Upsampling 192kHz
- Drive
- Custom Top-Loading CD Transport
- Digital Inputs
- 1× USB, 1× S/PDIF optional
- Digital Outputs
- 1× S/PDIF optional
- Analogue Outputs
- 1× RCA, 1× XLR per channel
- Output Voltage
- >2V digital full scale
- Frequency Response
- 20Hz – 20kHz +0.0 / -0.5dB
- Signal-to-Noise
- >100dB A-weighted
- THD+N
- <0.3%
- Dynamic Range
- >90dB
- Channel Separation
- >100dB
- Valves
- ECC81/12AT7 NOS, 5687/6900 NOS, EZ80/6CA4 NOS
- Dimensions
- 46 × 16 × 47cm
- Weight
- 28kg net / 49kg shipped
Gallery
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