I have a Yaqin MC-100B amp, which runs four KT88 output tubes, four 6N8P (or 6NS7 or 6H8C) tubes, and two 12AX7 preamp tubes. These are all Chinese tubes. With the speakers I have (Cerwin Vega VS-150) the amp sounds a bit bright. I'd like to warm it up a bit, and hopefully get a bit more in the bass department.

Where do you guys recommend I start? Any particular tubes you'd recommend for thumping bass on a budget?

Thanks!

Charles.

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