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The Robert Koda Takumi K-10 is a meticulously crafted solid-state line stage preamplifier that achieves exceptional audio performance through extreme refinement rather than proprietary gimmicks. It features nearly all point-to-point silver wiring with only two small internal PCBs that have gold-plated thick copper tracks. The audio circuit and power supply are housed separately in sub-enclosures within a copper chassis, with the power supply encased in a 2mm-thick soft iron magnetic vault and the preamplifier circuit inside a mu-metal case within a copper compartment. The design minimizes switching noise using only two diodes and a zero-feedback discrete voltage regulator. It offers more than 10 volts of maximum output with very low output impedance (75 ohms balanced, 37 ohms single-ended), making it compatible with a wide range of power amplifiers and capable of driving long interconnects. Inputs include three single-ended RCA and one balanced XLR, with outputs available in both single-ended and balanced formats selectable via a rear panel switch. The volume control is a high-quality L-pad attenuator using precision carbon composition resistors designed exclusively for audio use, with a simple mechanical selector switch and no remote control. The chassis is robust and heavy, weighing nearly 60 pounds, constructed with copper and aluminum for excellent shielding and vibration damping. The K-10 is recommended not to be left powered on continuously due to internal heat considerations. It is regarded as a purist design with no compromises, delivering a sound quality that is highly resolved, quiet, and neutral, with a tube-like presentation despite being solid-state. The price is approximately excluding a remote control which is not included.
Analog signal output specifications
Input and output connections
Size, weight, and appearance
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The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The NU-Vista PRE's signal-to-noise is 120 dB against the Takumi K-10's 115 dB, its output impedance 47Ω against 75Ω, its output voltage 28.0V RMS against 10.0V RMS, and its weight 22 kg (49 lbs) against 27.22 kg (60 lbs).
The 525's signal-to-noise is 120 dB against the Takumi K-10's 115 dB, its output impedance 10Ω against 75Ω, its output voltage 16.0V RMS against 10.0V RMS, and its weight 20 kg (44 lbs) against 27.22 kg (60 lbs).
The PRE G2's signal-to-noise is 120 dB against the Takumi K-10's 115 dB, its output impedance 22Ω against 75Ω, its weight 15 kg (33 lbs) against 27.22 kg (60 lbs), and its width 430 mm against 381 mm.
The KRC-HR's signal-to-noise is 96 dB against the Takumi K-10's 115 dB, its output voltage 14.0V RMS against 10.0V RMS, its output impedance 5Ω against 75Ω, and its weight 5.25 kg (12 lbs) against 27.22 kg (60 lbs).
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