Revdog. Frogman does know his stuff. I however really get good sound with my setup with a step up transformer. It is a winding of wire that has just the right amount of turns and shielding to step up the voltage without noise. Voltage is like water pressure. Amps ( current) is like the size of the water pipe. There can be a lot of water ( like in a big water pipe) but how long it takes to fill your bucket up also depends on the pressure ( voltage). The current or amps times the voltage gives you the watts. Somebody stop me if I say something wrong. Passive preamps and attenuators add resistance to the signal path and boost the voltage. This voltage pressure is what moves your speaker-as it changes pressure high and low back and forth, making airwaves from your speaker. Passive can be the purest sound, but can also degrade the sound if the transformer is not top notch. MC ( moving coil) cartridges are high current + low voltage output and needs to have the voltage stepped up to run many phono preamps. The button is a cheap step up transformer. A better one will make a big improvement.
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.
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- 28 posts total
- 28 posts total