Kinki Studio THR-1

Soundnews calls the presentation grain-free, transparent and smooth, while praising clear, textured treble. 6 Moons likewise found treble purity strong and timing crisp, though it considered the THR-1 less exposed and texturally glossy than Kinki's faster amplifier designs.

Reviewers consistently hear a warm, weighty and natural presentation, with Soundnews praising its fluidity, believable midrange and lifelike acoustic tonality. SoundStage Solo notes a small recession around 1kHz, while 6 Moons characterizes its sound as dry-warm, mildly sweet and leisurely rather than intensely energetic.

Dynamic authority is a major strength: SoundStage Solo found the bass dynamics startling and the overall response close to boundless. Soundnews reports effortless control with demanding headphones and substantial remaining headroom even when three power-hungry planar models were connected at once.

Soundnews reports a really black background when using the appropriate headphone socket. However, 6 Moons heard faint steady background noise, and its highly sensitive Final Sonorous X leaked signal even at the fully counterclockwise volume setting; the noise became inaudible on more conventionally sensitive headphones.

The THR-1 has exceptional voltage and current reserves for difficult loads, with reviewers praising its authority over demanding planar and high-impedance headphones. It is less accommodating with very sensitive low-impedance headphones, and SoundStage Solo found balanced source and balanced headphone connections especially important to achieving its best sound.

Construction receives emphatic praise, with Soundnews calling it built like a tank and highlighting its thick CNC-milled panels and substantial heatsink-like enclosure. 6 Moons also notes the Amplimo transformer, Alps Blue potentiometer and robust internal hardware, while finding the casework only barely warm in use.

Connectivity is strong for a dedicated analog amplifier, including RCA and XLR inputs, two 6.3mm outputs, a 4-pin XLR headphone output and balanced preamp output. The protective circuit is a useful safeguard against abrupt excessive volume, although there is no onboard DAC, remote control or digital connectivity.

At roughly $1,198 including shipping or €690 delivered at the respective review dates, reviewers regarded the THR-1 as unusually compelling for its performance. Soundnews specifically calls it outstanding value at about one-third the cost of the Benchmark HPA4, while SoundStage Solo notes that its character and system-matching needs will not suit every buyer.