Tubes Asylum

Mullard branded PCC88 1957 Pinched Waist D-Getter

73.170.59.60

colin_s_johnson@comcast.net

Anyone compared Amperex Pinched Waist Tubes:

1957 - Mullard branded Amperex PCC88 Pinched Waist D-Getter (steel pins)
1958 - Amperex E88CC Pinched Waist D-Getter (steel pins)
1958 - Amperex 6922 Holland PQ Pinched Waist D-Getter (gold pins)
1959 - Amperex 6922 USA PQ Pinched Waist D-Getter (gold pins)

Curious what people think are the sonic differences of each.

Follow Ups:

RE: Mullard branded PCC88 1957 Pinched Waist D-Getter - geoff 16:59:22 08/18/21 (1)
I have these 1957 pinched waist 6DJ8s.
- RE: Mullard branded PCC88 1957 Pinched Waist D-Getter - colin_s_johnson@comcast.net 05:50:23 08/19/21 (0)
  I have two of those.
  Are you interested in selling one?
RE: Mullard branded PCC88 1957 Pinched Waist D-Getter - Sondek 12:20:06 08/18/21 (2)
Those tubes were pretty rare even when I got my first tube preamp in 1988. Thirty plus years on, and I suspect the chances of finding somebody that has experiences with all four of those is slim to none.

I've never heard one, although I have a friend who has a few of the US made PWs. He loves the way they sound but will not use them in his rig because of how microphonic they are.

If you're in pursuit of some, be sure to ask how quiet, and or microphonic they may be before purchase.
- RE: Mullard branded PCC88 1957 Pinched Waist D-Getter - colin_s_johnson@comcast.net 12:49:47 08/18/21 (1)
  I have all 4 types but was wondering if there are known sonic signatures vs. just plug them in and try.
  I am also fortunate that none of them to date have been even slightly microphonic.
  Either that or the EAR is just well built and doesn't let tubes ring.
  I do use tube dampers, which may mitigate this and I weight down the EAR with lots of brass weights.
  - (Open in New Window)
  - RE: Mullard branded PCC88 1957 Pinched Waist D-Getter - adrianc 14:26:38 08/18/21 (0)
    To my ear,these are the best Pinched Waist E88CC,strange plate ?
    kc
RE: Mullard branded PCC88 1957 Pinched Waist D-Getter - adrianc 08:31:45 08/18/21 (0)
They did sounds slightly different
kc

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