The Yamaha YST-A5 is an active servo processing amplifier designed to work with specific Active Servo Processing speaker systems. It utilizes negative-impedance drive technology and a Helmholtz resonator design to reproduce bass frequencies through the cabinet opening, often referred to as an 'air woofer'. The unit features a dedicated cartridge holder for connecting either the specialized Active Servo Processing cartridge or a standard cartridge to drive conventional speakers.
| Total Harmonic Distortion | 0.15% |
|---|---|
| Frequency Response | 20-20,000 Hz |
Reduce the input level by using the output level control on the connected component.
An overload is applied to the unit due to excessive input, so you must reduce the input level.
The speaker-protection circuit mutes sound reproduction for a few seconds after the power is switched ON.