2014年3月4日 · Here's my first go at a low powered SET amp. 6AS7 power stage, 12AX7 driver stage, 5V4G rectifier, 15W Edcor GXSE (1.7K) output transformers, Hammond...

2022年7月25日 · There is SE, there is PP, and there is Totem Pole (one form of OTL). I would not recommend OTL for a first project amplifier. Others would recommend OTL (maybe they will build it for you, test it, fix it if needed, and test it again).

2023年1月2日 · Matched plate resistors and real high impedance CCS gives equal amplitude of both input plate signals. You might want to either use a CCS, or un-match the input tube plate loads enough to balance the plate signal amplitudes there. 1. A balancing pot in final cathodes. 2. A CCS at input stage.

2024年7月18日 · With the driver stage already throughly investigated for the 6336 SET, the design for this amp turned to the 6AS7 power triode. After investigating several different plate loads I settled on a 2.5kΩ load for each triode. This value presents a good compromise between power and distortion.

The 6AS7G is a double triode with special properties. The AC anode resistance is very low at 280 Ohms and the mutual conductance is considerable at 7.5 mA/V. This valve could be used in …

6 天之前 · I'd like to advice You, the iron of 10 w OT is very small for good sounding for current of 6AS7 or 6080 about 60-80 ma....more iron - better sound. I tried, output tube 6AS7 sound better with current 60 ma and +U about 160V. PS transformer must provide about 2 X 120-130 V AC.

2025年3月20日 · I thought some forum member may like to follow my build of a two stage SE 6AS7 amp. At this point it is in layout stage. Next the drilling and spraying of the top plate. The Base is Mirbeu (Asian wood). I'm am happy to listen to suggestions and comments. See layout and schematic below:

2022年5月9日 · Yesterday, after setting the B+ and installing the power supply dropping resistor, I tried out the 6AS7 SET. To say that I am pleased would be an understatement. 6AS7 SET is Completely Wired! I first announced this SET on September 18th, 2020. It’s only taken me about 19 months to get to this point.

20 小时之前 · If it comes down to a choice between the 6336 and the 6AS7, I would definitely go with the latest 6AS7 "Purpleheart" build. The driver has been tweaked to support the SET sound and the 6AS7 sounds really good. I have compared …

It is intended for low distortion audio frequency power amplification service in either single or push-pull/parallel tube applications. The Svetlana 6AS7 has an indirectly-heated unipotential cathode. The heater may be DC operated for the absolute best hum/noise performance.