I run a primaluna prologue 2 modded with auricaps and a hi-fi tunning fuses. I run goldlion kt-88's and mullard 4003's I also run gold lion 12ax7's or tungsol reissue ecc803s gold pins. My friend dropped by for a drink and to shoot the bull as they say and enjoy some music. I had the tungsols in at the time. We listened to a few songs and he asked me if he could try a pair of tubes out. I let the amp cool and took out the mullard 4003's and put in cbs hytron 5814's red lettering with black plates and a bent square getter. These tubes sounded fantastic the were sweet with nice air great tight full bass and very natural sounding I was very very impressed. I thought they sounded somewhat like my 4003's but more refined. very nice tubes.
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