详情

High-Definition (HD) digital audio is redefining the quality of recorded audio for the 21st Century. Having created some of the most natural and captivating music sources on the CD standard, AMR has turned its attention to High-Definition audio and in its own imitable way, taken the road less travelled.

Our first objective was to deliver the maximum quality of music from the existent libraries of CD standard audio (be it on silver disks or as ripped lossless files) equally balanced with the requirement to also deliver the maximum music quality from the new HD audio formats. We meticulously auditioned the full array of HD DAC chipsets and whittled the field down to one of the latest and most outstanding.

Again, the standard textbook implementation was shunned as we applied the same assiduous design and execution of the multi-award winning CD-77 to unleash the full, latent potential of the HD format. Each stage of the signal path is a technical magnum opus focused upon one objective: the most enchanting and pulsating performance. The result is the DP-777 Digital Processor.

Operation modes

High-Definition 32-Bit DAC • Organic: 44.1/48/88.2/96/176.4/192KHz • Apodising 808: 44.1/48kHz • MP Listen: 44.1/48/88.2/96/176.4/192KHz • Traditional: 44.1/48/88.2/96/176.4/192KHz Classic 16-Bit Multibit DAC • Bit-Perfect I; no digital or analogue filter • Bit-Perfect II; no digital filter, sinc(x) analogue filter

Digital Audio Inputs

• 2 x XLR/BNC with HD Valve Digital Input technology • 2 x RCA/Toslink SPDIF Interface • 1 x 24/192 Asynchronous USB Input

Analogue Inputs

• 2 x RCA per channel

Analogue Outputs

• 1 x RCA/XLR per channel

Thermionic Electron Valves amplification stage

• 2 x 6H1n-EV / 1 x 6H11P fitted

Output voltage (Digital Full Scale)

• >2V

Frequency Response

• 20Hz to 20 kHz +0.0, -0.5dB

Signal-to-noise ratio "A" Weighted

• >100 Db

Total Harmonic Dist. + Noise (THD+N)

• <0.3%

Dynamic range

• >90 dB

Channel separation

• >90 dB

Power Transformer

• 32 VA Custom EI Transformer (Digital Section) • 40 VA Custom EI Transformer (Analogue Section)

Power consumption

• Standby: < 1 W • Power on: < 60W

Rated voltage

• 115/230V~ AC 50Hz - 60Hz

Colour

• Silver or Black

Dimensions

• 17.7 in W by 4.7 in H by 14.6 in D • 45 cm W by 12 cm H by 37 cm D • 57 cm W by 49 cm H by 25 cm D (shipped)

Weight

• DP-777: 25.4 lbs / 11.5 kg • Shipped: 34.2 lbs / 15.5 kg