Here is the reality check: Musical Fidelity discontinued the FX series around 2018 to focus on their M-series (M2si, M3si, M6si) and the revival of the A1 integrated.
Today, the Musical Fidelity FX Power Amplifier is a "used market hero." You can find them on eBay, US Audio Mart, or HiFi Shark for between $200 and $400 USD. musical fidelity fx power amplifier
Is it worth buying used? Yes, with two caveats: Check for DC offset: Older units can develop
When paired with a suitable preamplifier (such as the matching Musical Fidelity FX preamp or a passive pre), the FX amplifier delivers a sound that is warm, musical, and forgiving – characteristic of late-80s British solid-state designs. US Audio Mart
At the time of release, the FX was considered a "budget audiophile" amplifier. It offered high-end sound quality without the extreme price tag of "high-end" status brands. Reviewers praised its ability to drive difficult speaker loads and its lack of coloration.
