Интегральные усилители — Marantz PM-10

The PM-10 belongs to the Reference range of Marantz as a two-channel integrated model, rated at 200 W per channel into 8 ohm and 400 W per channel into 4 ohm. Marantz describes it as a purely analogue design with no digital processing on board, joining pre and power stages in a single case. The US price is USD 8,999, the warranty runs for 5 years and a single black finish is available.

Key specs that matter

Response spans 5 Hz to 50 kHz, with a damping factor of 500. Signal-to-noise ratio is 111 dB for a high-level input at 2 V and rated output, and 113 dB through the power amp direct input. There are seven audio inputs in total, two of them balanced. Line-level sensitivity is 400 mV at 20 kohm, while the balanced inputs take 800 mV at 40 kohm and the power amp direct input 1.5 V at 20 kohm. For vinyl, MM pickups need 2.6 mV into 47 kohm and MC pickups 280 microvolts. The chassis measures 440 mm wide, 453 mm deep and 168 mm high and weighs 21.5 kg. Power draw is 270 W in operation and 0.3 W in standby.

Engineering and use context

Marantz chose Class D amplification, and the circuit is fully balanced with a double mono layout on a symmetric PCB. Marantz fits its custom HDAM-SA3 modules with current feedback, and every input passes through an input buffer amplifier. Feeding the preamplifier is a linear drive supply using a toroidal transformer, and the power amplifier channels are arranged like monoblocks, each with a dedicated supply. The chassis is double-layered and copper-plated, with a separate aluminium extrusion heat sink, a metal front panel, a 5 mm aluminium top plate and machined aluminium feet. Schottky diodes and customised parts appear in the parts list. The Marantz Sound Master handled the final voicing. Owners also get automatic power-off and a removable power cord. Marantz specifies high-grade audio components throughout the signal path and the power supply sections.

Pairing

Speakers connect through four SPKT-100+ terminals from Marantz, and its single pre-out can feed an extra power amp or a powered sub. The power amp direct input lets the amplifier stage work under an external processor. A headphone output sits on the unit, and D-Bus plus two 3.5 mm mono jacks for the floating control bus link it to other Marantz components, all operable from the RC004PMSA system remote.

Alternatives

The Marantz MODEL 10 is another Reference integrated amplifier, rated at 250 W and built around a Marantz switch-mode power supply with dual-mono symmetrical circuitry.