Marantz PM6100SA (2000, ver.2 2003)

Name: Marantz PM6100SA
Brand: Marantz

The Marantz PM6100SA is a stereo pre-main (integrated) amplifier that first appeared in 2000 at ¥39,800. The documentation lists two versions: the original PM6100SA (2000) and a revised PM6100SA ver.2 (2003, ¥43,000). Both are rated at 50W + 50W into 8Ω (20 Hz-20 kHz, both channels driven), with THD of 0.01% and an SMPTE intermodulation distortion figure of 0.01%. Frequency response via CD direct is 5 Hz to 60 kHz (+0/-1dB). Damping factor is rated at 100 into 8Ω.

The original model takes its design approach from the higher-end PM14SA and PM-17SA. It uses a current-feedback topology in both the preamp and power amp stages. A dedicated relay lets the CD direct input bypass the selector. A dedicated Rec buffer amplifier handles CD output. The WBT speaker terminals accept banana plugs and Y-lugs. A pre-out allows bi-amping with the companion SM6100SA power amplifier. The AC cable is the inlet type, and a system remote is included.

The ver.2, released in 2003, is described as an improvement on the original through "Absolute SA Technology," which re-evaluated parts, power supply, and wiring. The specific upgrades are Schottky barrier diodes in the rectifier circuits, high-quality polypropylene capacitors, low-noise metal-coated resistors, LAPT audio transistors in the output stage, and high-quality electrolytic capacitors. It keeps the current-feedback design, WBT terminals, Rec buffer, and MM phono stage. It also adds bi-amp capability with the SM6100SA ver.2. The ver.2 ships with a wireless remote that can also control Marantz CD players like the CD7300.

The record on this model is mostly technical specification sheets. No period magazine reviews of the PM6100SA have surfaced in the archive's sources, and no production end date, market context, or owner reception is documented. One forum commenter on Head-Fi cautioned against confusing the 6100SA with the lesser 6010OSE. A Russian listing calls it a "legendary integrated amplifier" in perfect condition. A used sale price of US$489 (tax included) has been recorded.

Known specifications (original PM6100SA unless noted):

- Rated output (20 Hz-20 kHz, both channels driven): 70W + 70W (4Ω) / 60W + 60W (6Ω) / 50W + 50W (8Ω)

- THD: 0.01% (8Ω)

- IM distortion (SMPTE): 0.01%

- Frequency response (CD, source direct): 5 Hz - 60 kHz, +0/-1dB

- Damping factor: 100 (8Ω, 20 Hz-20 kHz)

- Input sensitivity/impedance: Phono MM 2.3mV/47kΩ; High level 200mV/15kΩ

- S/N (IHF A, input short): Phono MM 85dB; High level 110dB

- Tone controls: Bass ±8dB (100 Hz); Treble ±8dB (10 kHz)

- Power consumption: 135W

- Dimensions: 440 × 124 × 340 mm (W×H×D)

- Weight: 7.5 kg