I'm wondering if you guys could help me out as EAR has been less than helpful. A long time ago I purchased an 834p that was supposed to be mc and mm - it has the switch - the box says so etc. - but come to find out from my tech there is no mc stage! The two parts for it in the back corner aren't there. Talk about frustrating - anyway, could anyone tell me what those two parts are exactly (OEM) so I can have him put them in? EAR wants a gob of money for them but wouldn't tell me what they are.
Are there any other EAR 834P modders lately?
I had to beg David Schulte of Upgrade Company to mod my EAR 834P because there are so many detractors. There are also loads of DIY people who have tweaked the circuit in custom ways. The changes I had made include V-cap coupling caps and RFI shileding. Switching from using the 12AX7 tubes to 5751 or 12AT7 tubes if you can handle the lower gain also is highly beneficial. I use Valvo 6201 blue print in the one spot, Brimar and Siemen Halske 12AT7's in the gain stages 2 & 3. 2 is not left and 3 is not right- it sums the tubes for the gain stage left and right. My results are stunning. Because the 12AT7's only have 70% of the gain or the 12AX7, I changed out my Bent Audio step up tranny's for Bob's Devices Cinemag 1131 with a 1:40 or 1:20, ratio which is adjusted at the flip of a toggle switch.