The cheapest route would be to change out the Telefunken 12AX7 tubes in the Calypso to something not has solid state sounding as the telfunkens. You could try Mullards, Amperex or one of the NOS 5751 tubes. That's what I did. If this doen't work then you could change out the tubes on the amp. There are many threads on Audiogon or AudioAsylum about changing the Calypso Tubes.
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