Forums https://www.decware.com/cgi-bin/yabb22/YaBB.pl AUDIO FORUMS >> Replacement Tubes >> ZROCK3 Tube Rolling https://www.decware.com/cgi-bin/yabb22/YaBB.pl?num=1791331123 Message started by Alfalover on 10/07/26 at 00:58:42

Title: ZROCK3 Tube Rolling Post by Alfalover on 10/07/26 at 00:58:42 I just received a ZROCK3 and added it to my system (Rega Elicit Mk 5, Custom modified by Magnastand, a pair of Magnepan MG-12SQ speakers, a Linn LP12 with Sound-Smith Carmen phono cart,). With the tube that was supplied by Steve, the bass was a little overwhelming. The knob on the front panel could not go past the one o'clock position. The solution was to try tube rolling. A 1957 Raytheon 12AU7 PLATINUM PLUS Grade Preamp Tube 90% NOS found for $21.95 on eBay, solved the issue (tested at as NOS). Now with a less bass-heavy 12AU7 tube, I can move the knob to the past two o'clock position. This provides a tighter bass that I can still feel in my body. Moving the front knob higher allows the ZROCK 3 to tame the high end.

Title: Re: ZROCK3 Tube Rolling Post by DJFreon on 10/07/26 at 19:48:30 I use a Mullard 12AT7WA with good result. Alfalover, I sent you a PM.

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