2022年1月9日 · I’ve built several amps with Rob Robinette’s EF80 power section, a couple of tweeds, a super lead, and a Matchless clone and they all churn out killer tones.

2008年4月11日 · EF80 and EF86 are simply very different valves: they are both pentodes, both use B9A base and both have 6.3V heater but apart from that they are very different.

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 for the output/power tube. Other features / specs include:

# EF80+FU32电子管单端甲类功放 ! [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。

2008年3月7日 · It is one of the websites that offer a walkthrough for the design of a SE valve amplifier. You can follow the same steps with the data from the EL84 and the EF80 (I would probably triode connect the EF80, curves in triode mode can be found here. The above does help, but do not expect to have it ready on the back of a napkin.

The Deluxe Micro design is an attempt to capture the magic of the late 1950's classic Fender tweed 5E3 Deluxe tube guitar amplifier in an easy to build, two tube, 1 watt output practice amp. The Deluxe Micro's single channel preamp circuit was inspired by the 5E3 Deluxe's Bright Hi channel. Both triodes of the V1 12AY7 are used as gain stages.

The Bassman Micro tube guitar amplifier is a compact practice amp that's moderately easy to build, uses three 12A*7 tubes and puts out 2 to 4 watts of output power. The Bassman Micro's …

2020年12月13日 · I came up with an all EF80/EF184 push pull low watt amp and the preamp using the EF80 triode strapped. It hadn't been done before and inspired Rob to make a better design.

Deluxe Micro EF80 Uses EF80 small pentodes for the 2 watt power amp. Bassman Micro Amp The Bassman Micro 1 watt tube guitar amplifier is a compact practice amp that's moderately easy to build, uses three 12A*7 tubes and puts out 1 to 3 watts of output power.

2023年7月28日 · Around 6 months ago i built the Slo mikro ef80 amp from Robs site. I almost immediately regretted choosing that version, even before i finished it. I could have built the 40watt for almost the same price but i finished it anyway. I tried just about everything and never could get it to sound good.