HD20 is a high-end decoder with volume control function, which can be used as a preamplifier and equipped with a remote control. The power switch of the machine is next to the power input socket on the back panel. After power on, HD20 will enter normal working state after 15 seconds self-test. During self-test, HD20 is in mute state and the display screen flickers, which are all normal and part of the boot program. The top four rows of buttons on the HD20 remote control can be used to remotely control most HEGEL amplifiers and CD players. For different models, the functions may be slightly different. The bottom two rows of buttons are specially used to control HD20 and computers.
The HD20 is a high‑end audio decoder with built‑in volume control that can also serve as a pre‑amplifier. It includes a remote control that can operate most HEGEL amplifiers, CD players, and computer media players.
The manual explains power‑on self‑check, display behavior, remote key functions, input port order (COAX1‑COAX2‑OPTICAL‑USB‑COAX1‑COAX2), volume range (0‑100), USB audio support up to 24‑bit, and recommended wiring for the best sound quality. This manual is written in Chinese.
| Volume range | 0 – 100 |
|---|---|
| Supported audio resolution | 24 Bit |
| Input ports (order) | COAX1 → COAX2 → OPTICAL → USB → COAX1 → COAX2 |
| Output ports | RCA (unbalanced), XLR (balanced), COAX1, COAX2, Optical, USB |
| Impedance compensation | Enabled on COAX1 input |
Press the DISP key to turn the display off; press it again to turn it back on.
It automatically selects the port that was active when the unit was last turned off.
The computer shows the device as “TE7022 Audio W/SPDIF”.