Интегральные усилители — Rotel A10MKII

The Rotel A10MKII is a stereo integrated amplifier with Class A/B output that takes analogue sources only. Its linear supply uses a big toroidal transformer that Rotel winds in-house, and it combines three line-level RCA inputs with a moving magnet phono stage for a turntable. Buyers can pick a black or a silver chassis.

Key specs that matter

Rotel rates the A10MKII at 50 W per channel into 8 ohm and 60 W per channel continuous into 4 ohm, with an FTC rating of 53 W per channel into 4 ohm. THD stays under 0.03%, IMD likewise, and the damping factor is 120. Line inputs run from 10 Hz to 100 kHz within -0.5 dB and +0.05 dB, while the phono input covers 20 Hz to 20 kHz within -0.5 dB and +0.3 dB. With A-weighting, line inputs measure 90 dB at maximum volume and 98 dB at minimum volume, and 85 dB for phono. Line sensitivity is 120 mV at 45 kilohm impedance, and the MM input needs 1.5 mV at 43 kilohm. Overload margins are 4 V on line and 50 mV on phono.

Engineering and use context

The case measures 430 x 73 x 347 mm with a 60 mm front panel height and weighs 6.6 kg. On the US 120 V, 60 Hz version, power consumption is 150 W, standby draw stays under 0.5 W, and the thermal rating is 450 BTU/h at 1/8 of rated output. The front panel carries rotary bass, treble and balance knobs, with tone controls acting by plus or minus 6 dB at 100 Hz and 10 kHz. A dedicated headphone amplifier circuit drives the 3.5 mm jack beside the controls. Inside, a multi-tap transformer gives the small-signal circuitry its own feed, isolated from the output transistors, and the layout keeps these sections physically and electrically apart to lower the noise floor. Volume is handled by a motorised analogue potentiometer, so the supplied IR remote turns the same control that sits on the fascia. There are no digital inputs, no DAC and no Bluetooth receiver on this model, so every source stays in the analogue domain. The rear panel carries a detachable IEC mains inlet, two 12 V trigger outputs and heavy 5-way speaker terminals, and the amplifier can turn itself off automatically.

Pairing

The three RCA line inputs suit a CD player, a tuner and a network player with its own analogue output, and a record player using an MM pickup goes directly into the phono input. The trigger outputs can bring other units out of standby along with the amplifier. The higher low-impedance output figure is relevant for loudspeakers that present a more difficult load.

Alternatives

For digital inputs and Bluetooth in the same case with equal rated output, Rotel offers the A11MKII integrated amplifier.