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Looks familiar but am not sure now (18 years is too long a period). Also i recollect this head phone was sounding very different when i connect the Sony TC-FX44 tape deck to my Sony TC-AX44 amplifier and connectng the headphone to the amplifier. May be this was due to the power amplification by the amplifier.
Only if i connected the headphone directly to the headphone output of the tape deck it sounded mind blowing. So i belive there is a lot to discover in the source and the corresponding amplification that comes inbetween. I am not sure is it because of the minimum signal path for the tape deck or the wrong design of the Sony Amplifier which took away the punch from the head phones (i am still pondering about that experience).