2022年1月9日 · Long story short, I would like to have a low power amp to suit my needs. As I am relatively new in diy amp land I started looking for existing designs. After a good search I …

2008年4月11日 · Built an amp using an EF86 in the preamp, and since I had an extra hole in the chassis, and an extra EF80 laying around, I wired up an extra socket in parallel, correcting the …

The EF80 uses standard 9-pin sockets and 6.3v heaters so they are easy to implement into a modern amp build. At 270 to 300v on the plates and a 300 ohm cathode resistor (as in the …

Here's is an absolutely fantastic sounding, freshly built, Champ Micro based off of Fender's legendary 5F1 Champ circuit. This amplifier uses a 12AY7 for the preamp tube and an EF80 …

[AMP] (pic/pic1.JPG) #### 电路方案介绍 使用西门子EF80和北京FU32制作一台单端功放资料，包括实际使用的电路原理图、外壳切割图纸等资料。 原理图如下： ! [SCH] (pic/pic3.jpg) 采用了 …

The EF80 uses standard 9-pin sockets and 6.3v heaters so they are easy to implement into a modern amp build. At 270 to 300v on the plates and a 300 ohm cathode resistor (as in the …

2020年12月13日 · Last December I was looking at using a bunch of old '50s Mullard EF80 (and its younger bro from the '60s EF184) pentodes I had gathering dust. I came up with an all …

2022年5月30日 · hardly anyone ever seems to list/discuss the voltages people are achieving with EF80 power amp builds. perhaps for the blackface / tweed builds it's less of an issue, where …

2022年1月9日 · Re: EF80 based power amp for guitar Post by martin manning » Mon Jan 10, 2022 2:11 pm You can decrease the cathode resistor to get more idle dissipation, as you are …

Here's is an absolutely fantastic sounding, freshly built, Champ Micro based off of Fender's legendary 5F1 Champ circuit. This amplifier uses a 12AY7 for the preamp tube and an EF80 …