New review
Sylph Audio FB100 Stereo Amplifier Kit Review
Audio Science Review measurements of a TPA3251-based stereo amplifier kit.
Why it is interesting:
- The FB100 uses a TI TPA3251 power stage with post-filter feedback.
- It is a balanced implementation with SpeakOn speaker terminals.
- The published measurements show very low noise, low distortion, load-independent frequency response, and strong channel separation.
- It is an assembled board rather than a finished casework product, which makes the engineering performance interesting but adds practical build requirements.
Summary:
Audio Science Review tested the Sylph Audio FB100 stereo amplifier kit, an assembled board sold for about $175 at the time of review. The design uses a TPA3251 amplifier stage and post-filter feedback, with a low-gain balanced input implementation and SpeakOn outputs.
The measurements are the main attraction: the review reports noise well beyond 16-bit dynamic range at 5W, very low distortion through the audible range, a flat response with different loads, and unusually strong channel separation. The caveat is practical rather than hidden in the measurements: this is not a complete amplifier. A power supply, enclosure, connectors, and the necessary wiring remain the buyer’s responsibility.
Source: AudioScienceReview ↗