Headphone amplifiers & DACs (D/A Converters)

Impacto universal / Impacto essential

• What shall be considered when connecting the cables?
• When does the HI-RES LED illuminate?
• How can I increase the volume when using high-impedance headphones?

General headphone amplifiers

• What digital/analogue converters (DAC) do you recommend in conjuction with the A 2 and A 20?
• What does the Hi–Res Audio logo mean?
• Why doesn’t the A 2 have any digital inputs?
• When do you need to use a headphone amplifier?

A 20

• Why does the A 20 have an output impedance of 100 ohms?