Audiophilepure

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As usual, the sound quality evaluation starts with some basic measurements. As far as RMAA’s result goes, TU-HP02’s noise, dynamic range and stereo crosstalk number are pretty good and close to the reference O2. As expected, intermodulation distortion and total harmonic distortion are both noticeably higher due to the purposefully implemented tube-like distortion circuit, though the number are still below the 1% threshold. Frequency response is flat from 20Hz to 20kHz. Output impedance is calculated at 1.4 ohm, which is fairly low. Plenty of current output which means it should have no problem driving even very low impedance headphone. All and all, the numbers look quite solid.

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