Abbingdon Music Research PH-77 Reference Class User Manual
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7.1 Using the HD 24-Bit/96kHz Analogue-To-Digital Converter
The PH-77 has built-in, a HD 24-Bit/96kHz Analogue-To-Digital Converter (ADC) with AMR’s customary high-
level of digital implementation to ensure the very best possible quality of signal transfer.
This means it is possible to directly digitise/transfer a track/tracks from a vinyl record to a digital format on a
personal computer. The music file may then be archived or played back on another device such as personal compu-
ter, iPod, AMR CD-77 Reference Class Compact Disk Processor/AMR CD-777 Premier Class Compact Disk
Processor/AM-777 Premier Class Pre-Main Amplifier (via the respective USB input).
To setup the Analogue-to-Digital Converter to transfer/digitise a vinyl record:.
i. Have the PH-77 and a turntable source correctly connected with the desired vinyl record ready for playback.
ii. Have the computer source ready with the desired recording program installed* and properly configured.
iii. Switch OFF mains power via the ‘POWER’ rocker switch (R11) at the rear or the PH-77.
iv. WAIT 30 seconds, then switch on mains power to PH-77 ON via the rocker switch (R11).
v. Connect the USB cable between the PH-77 and the personal computer.
vi. Commence transfer of the recording through the preferred sound recording program.
*Many sound recording programs exist (from freeware to professional studio recoding programs). Under W indows, the PH-77 is
recognised as WDM (Windows Driver Model) and referred to as “USB Audio Device”.
As soon as a POWERED USB cable is connected, it is automatically detected by the ADC and will power on ready for use. For the
highest quality playback, once archiving has been completed, always disconnect the USB cable or at the very least, do not leave the
USB cable connected to the computer. The ADC will then be disconnected from the signal path.
With a powered USB
cable, the 24/96 ADC
is automatically
switched ON and in
the signal path
For technical queries,
please contact your
AMR distributor/
dealer or email:
Section 7 - The Analogue-to-Digital Converter