Preamp Type
The design of a preamplifier’s line stage, which controls signals sent to the power amplifier.
In this field, Active means a stage that increases signal voltage. Passive means no active amplifying or buffering device in the signal path. Buffered (unity gain) uses active electronics to lower output impedance without increasing voltage. Unity gain is 0 dB: unchanged voltage, not proof of a passive circuit.
Preamp Type — Preamp
Check the source’s output level, the power amplifier’s input impedance and cable length. These determine whether added gain or buffering is useful. Passive designs need suitable source and amplifier matching; a missing gain figure does not prove a preamp is passive.
AV processor takes precedence for multichannel surround processors, even with active circuitry. A stereo home-theater bypass does not make a preamp an AV processor. Built-in DAC or phono stages do not decide the line-stage type. For switchable designs, check the documented operating mode.
Sources
- SYS description and FAQ — Schiit Audio
- AV7706 manual — High quality sound — Marantz
Sources
- Saga owner’s manual — Schiit Audio
- Saga 2 specifications and FAQ — Schiit Audio