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PSI Audio AVAA C214 Active Bass Trap
PSI Audio AVAA C214 Active Bass Trap
Your speaker/room interaction is half your sound. You can invest in exceptional electronics and speakers, optimize every component in the signal chain, and still find that bass in your listening room sounds thick, uneven, and hard to resolve — because the room is doing things to the bass frequencies that no upstream component can fix. The PSI Audio AVAA C214 is what you do about that.
The Problem with Passive Bass Treatment
Passive bass traps work by absorbing bass energy in porous materials. To be effective at frequencies below 100Hz, a passive trap needs to be physically large — typically a quarter-wavelength of the target frequency, which at 50Hz means over a meter of depth. Most listening rooms cannot accommodate enough passive treatment to control room modes meaningfully. The result is treatment that helps at higher frequencies and does relatively little at the frequencies that cause the most obvious problems.
The AVAA Approach
The AVAA C214 is an Active Velocity Acoustic Absorber. Instead of physically absorbing bass pressure, it uses a microphone to sense the particle velocity at the room boundary and drives a small loudspeaker to create a counter-pressure that effectively simulates an infinitely absorptive surface. This active approach is three to four times more effective than a passive trap of equivalent size, and it works from 15Hz to 150Hz — the full range of bass problems that affect listening rooms.
Plug it in, place it in a room corner, and let it work. No room modification, no structural treatment. The C214 is self-powered and requires only an AC outlet.
Press Recognition
PSI Audio's AVAA products have been reviewed by Stereophile, Hi-Fi+ and covered in professional audio publications. The measurement results and listening reports are consistent: meaningful, measurable improvement in bass evenness across listening positions.
Specifications
- Type: Active Velocity Acoustic Absorber
- Effective frequency range: 15–150Hz
- Effectiveness: 3–4x more effective than equivalent passive traps
- Placement: Room corners
- Power: AC powered, plug-in
- Modification required: None
Questions about how many AVAA units your room needs, or how to measure your room modes before placement? Reach out — we can walk you through it.