Headphone amplifiers & DACs (D/A Converters)

PRO X Lightning / UBC-C Cable

• Why do the two cable versions (USB-C / Lightning) have different technical data?
• Which devices, with an Apple Lightning port, can I connect with the PRO X Lightning cable?
• Which USB-C devices can I connect to the PRO X USB-C cable?
• What are the advantages of using the PRO X Lightning / PRO X USB-C cables over the analogue jack connection?
• Are the PRO X Lightning / PRO X USB-C cables just adapters? How do they work?
• Which headphones are compatible with the PRO X Lightning / PRO X USB-C cables?

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

• Will my headphones be loud enough on my amplifier? Online calculator
• 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?