Deuterium
100+ Head-Fier
- Joined
- Nov 15, 2005
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I have a Yamamoto HA-02 on order. It will go into my primary headphone rig in which I am using 600s as my can. I have never fully understood impedance (mis)matching and would appreciate some additional guidance from forum members. Specifically, with this amp, how would the 300 ohm 600s function relative to a lower impedance can. I have attached a link below, as well as some excerpts from the review with the specs on the HA-02. I appreciate your help.
"The HA-02 wires it as a feedback-less pentode which benefits from ultra-quality in-house-wound transformers adapted from the accoladed A-08S. 50-ohm headphone and 8-ohm speaker secondaries connect to the front-mounted ¼" socket and rear-mounted speaker binding posts. Delivering 300mW @ 50 ohms at the former and a mere 240mW @ 8 ohms at the latter, a speaker driven from the HA-02 will have to be efficient and used in the extreme nearfield, say in a desk top PC setup. The HA-02 ships with an audio-technica designed interconnect terminated on the source end with a mini stereo jack. Hello iPod or equivalent.
Gain of this headphone amp is 9.5dB into 50 ohms, 1.5dB into 8. Frequency response is 30-21,000Hz and 45-17,000Hz respectively. Noise at the ¼" terminal is given as 100 microvolts. Everything about this device spells high class and the promise of noise-free, high resolution, ultra musical thermionic headphone addiction."
From a review posted at 6moons: http://www.6moons.com/audioreviews/yamamoto4/ha02.html
"The HA-02 wires it as a feedback-less pentode which benefits from ultra-quality in-house-wound transformers adapted from the accoladed A-08S. 50-ohm headphone and 8-ohm speaker secondaries connect to the front-mounted ¼" socket and rear-mounted speaker binding posts. Delivering 300mW @ 50 ohms at the former and a mere 240mW @ 8 ohms at the latter, a speaker driven from the HA-02 will have to be efficient and used in the extreme nearfield, say in a desk top PC setup. The HA-02 ships with an audio-technica designed interconnect terminated on the source end with a mini stereo jack. Hello iPod or equivalent.
Gain of this headphone amp is 9.5dB into 50 ohms, 1.5dB into 8. Frequency response is 30-21,000Hz and 45-17,000Hz respectively. Noise at the ¼" terminal is given as 100 microvolts. Everything about this device spells high class and the promise of noise-free, high resolution, ultra musical thermionic headphone addiction."
From a review posted at 6moons: http://www.6moons.com/audioreviews/yamamoto4/ha02.html