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| [#21] 請教 MCINTOSH Mc-275 mk v 用平衡輸入會比較好聲D 因'The input stage of MC275 re-issue is completely different to old design. In balance input of re-issue, the positive and negative phase is push-pull amplified directly and coupled to output transformer to form a completed output waveform. This new design is to avoid the phase-splitter design in the traditional tube amplifier design. In single-end input of re-issue, the input itself forms +ve phase and use a half of 12AX7(V1) to invert input to form -ve phase. In this case, the signal of +ve and -ve phase is not mirror inverted since -ve phase is suffering distortion produced by an extra 12AX7 amplifier stage. This can explain why the balance input sounds better than the RCA input in the case of MC275 re-issue.' For schematic of new MC275, please see below :  |
tom55 正式會員118.xxx.xxx.6 |
2024-04-10 14:27 | |
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| [#22] 請教 MCINTOSH Mc-275 mk v Thank you tom55 師兄 |
黃百萬 正式會員 219.xxx.xxx.142 |
2024-04-10 16:22 |
