Интегральные усилители — Exposure 2510

Exposure's 2510 is a two-channel integrated from the 2510 Series from Exposure Electronics, the British maker based in Sussex. It combines a line preamplifier, a moving magnet phono stage fitted as standard and a two-channel power amplifier in one all-aluminium case, and it comes with a remote control. The UK list price was GBP 2,300, and the unit carries a three year guarantee from the maker.

Key specs that matter

Rated output is 75 W RMS per channel into 8 ohm and 125 W into 4 ohm. Total harmonic distortion stays below 0.015% at rated power, referred to 1 kHz. Exposure quotes a frequency response of 20 Hz to 20 kHz within 0.5 dB and a noise figure better than 100 dB below output (A-weighted). Damping factor exceeds 150. Input sensitivity is 2.5 mV on the phono input and 350 mV on the line inputs. The case measures 440 mm wide, 90 mm high and 300 mm deep, and weighs 6 kg net. Maximum power consumption is 500 W. Black and titanium finishes are offered.

Engineering and use context

There are five line inputs next to the phono input, a fixed AV input set at 850 mV for home cinema integration, and a separate preamplifier output. The preamplifier output can feed an additional stereo power amplifier or an active subwoofer. Inside, the circuit uses cascode stages to improve immunity to power supply variations, and the output stage is built with fast bipolar transistors. Capacitors in the signal path are high quality parts, and the circuit board is laid out with a short signal path and short power supply path. The case uses aluminium throughout with an extruded front panel, a construction chosen to control resonance and electromagnetic interference. The compact case height allows it to sit on a standard rack shelf. Remote control covers everyday tasks from the listening seat, and the titanium finish matches the other Exposure 2510 Series components, which share the same width and front panel style.

Pairing

The higher output into lower impedances and the high damping factor let the 2510 handle typical loudspeakers, from standmounts to medium-size towers. The built-in stage takes a moving magnet cartridge directly, whereas low-output moving coil types need extra gain from an external MC stage.

Alternatives

The Exposure 3510 integrated delivers 110 W RMS per channel into 8 ohm, with six line inputs and slots for an MM or MC phono module or a DAC.