How do you switch between inputs on the Audio-GD R28?
Use the input selector on the front panel to switch between the available inputs: USB, Coaxial, Optical, I2S and XLR.
What headphone outputs are available on the R28?
The R28 features a 6.3 mm unbalanced jack and a 4-pin XLR balanced output for headphones.
Does the R28 support DSD files?
Yes, the R28 supports DSD files up to DSD512 via USB and I2S, and up to DSD256 via Coaxial and AES/EBU inputs.
How do you set the gain for the headphone amp?
The R28 offers two gain modes: 12dB for headphones with sensitivity above 95dB and 22dB for less sensitive headphones.
Can the R28 be used as a preamplifier?
Yes, the R28 functions as a preamplifier with variable outputs via RCA, XLR and ACSS.
What digital inputs are available on the R28?
The R28 is equipped with USB, Coaxial, Optical and I2S digital inputs.
How much power does the R28's headphone amplifier provide?
The balanced headphone output delivers up to 9500mW at 25 Ohms, enough to drive even demanding headphones.
Is the R28 compatible with both Windows and macOS?
Yes, the R28 is compatible with Windows (with driver), macOS, Linux and iOS.
How is the volume controlled on the R28?
Volume is controlled via a high-precision 100-step super-exponential control using relays and precise resistors.
Can the R28 receive firmware updates?
Yes, the R28 supports easy firmware updates via the update port on the rear panel.