Marantz PH-1 (1990–1999)

The Marantz PH-1 is a standalone phono preamplifier from the 1990s, built to handle both moving magnet and moving coil cartridges. It's a fairly straightforward box — steel chassis, aluminum front panel — but the engineering inside is what set it apart. The PH-1 uses two independent power supplies, one per channel, with a separate AC transformer for each side. That dual-mono approach, combined with a double-sided PCB and quality components, was unusual for a phono stage in this class.

The front panel is minimal: a small toggle to select MM or MC, a phase reversal switch, and a ground screw. The power switch, somewhat awkwardly, is on the rear panel. Outputs are available from both RCA phono jacks and a 3-pin XLR socket. There is no subsonic filter.

Performance-wise, the PH-1 was praised for its neutrality. Audio (June 1994, p.98) ran advertising for the model during its production run, and TNT-Audio's later international review described it as state-of-the-art in terms of neutrality — not a unit for those who like a sweet or colored sound. The same review noted the PH-1 worked best with MC cartridges in the 0.3–0.5 mV range and was not recommended for very low output cartridges (0.2 mV or less). With digital sources, it reportedly made music "sound analog again," with soundstage and imaging among the best.

Documentation on the PH-1 is thin in places. HiFi Classics dates production to 1990–99, and HiFi Engine lists the dimensions at 215 × 62 × 265 mm with a weight of 2.2 kg. Spec sheets agree on MM input sensitivity of 2.2 mV and MC of 0.18 mV, with input impedance of 47k ohms (MM) and 100 ohms (MC). Gain figures conflict between sources — HiFi Engine lists 40 dB (MM) / 60 dB (MC), while TNT-Audio cites 45 dB / 65 dB — so treat those as approximate. No original MSRP, THD, or signal-to-noise figures have surfaced in the sources reviewed.