Has anyone actually replaced the 5687 tubes in the Power 2 & 3 with 6900 tubes? I need to know if any modification was used or was it a drop in replacement.
On the output tubes, what tubes have you tried other than 6550 or KT88? (your observations)
I have changed all tubes in my Power2 and now is really immense:5687 RCA faceplate,6922 Siemens,KT88 Electro Harmonix( better than Svetlana,more power,more reliable.) Piero Italy
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