Spec
Vacuum tubes | WE408A x2 |
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Maximum output | 300mW (50Ohms / headphone) 240mW (8Ohms / speaker) |
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Frequency response | 30-21,000Kz(headphone) 45Hz-17,000Hz (speaker) |
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Residual noise | 100μV(headphone output) 70μV(speaker output) |
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Gain | 9.5dB/50ohms (headphone) 1.5dB/8ohms (speaker) |
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Dimensions | 150(W)325(D)125(H)mm |
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Weight | 4.2kg |
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This is a made-to-order product. Estimated delivery time is about 3 months.
Review
The HA-02 is like water - ultra-transparent and essentially absent as a playback device. How often have we heard that no audio amplifying device is as linear as a triode only to realize that once coupled to real-world loads, linearity goes to hell and back in the toilet? The only listeners to know just how linear and dynamic triodes really are will be those who use single-ended feedback-less valves in their respective entry ranges of available output power. Connecting a triode to a single tiny -- and naturally crossover-less -- driver in a headphone prompts average playback levels in the milliwatt sphere. That's where triodes rule and the Yamamoto device proves it brilliantly.