Professional / Reference ($$$$ )

• Helix (Germany) — DSP Pro Mk3, DSP.3 ($700-1200)
• Audison (Italy) — Bit series ($600-1500)
• Mosconi (Italy) — DSP series ($700-1100)
• Alpine (Japan) — PXA-H800 ($1800) — OEM integration specialist
• Arc Audio (USA) — PS8 Pro ($900)