Here are some interesting schematics for the 811A tube.
The Shishido (wavac) 811A tube amp schematic :

This is the final schematic of my Parallel Single Ended 807 monoblock tube amps diy project. Note that we apply no feedback at all.

There is also a modification schematic using the 5687 tube as driver
Find the 807 tube power supply schematic by clicking here

The OPTs are hand made designs made by a guy who lives in Beograd (Serbia). All OPTs are special orders according my needs and follow exactly the tube characteristics for each design.

Here is the amplifier schematic for my EL84 tube amp diy project ( triode strapped ), based on decware se84. There is also and a modification with 6922 tube in driving stage.

The tube amp power supply of my 807 single ended amp. This tube amp power supply uses 2 x 5Y3GT tubes per channel.

Important notes regarding the power Transformers :

The power transformers used in my 807 parallel SE project are old transformers from an old philips amplifier.
Here are the data regarding all the Power transformer sections.

T1 = 220V mains (you should change this to 110V for US or 120V for Canada)
T2 = 5V / 3A
T3 = 600-0-600V 250mA
T4 = 10V / 4A (actually you need 7-7.5 Volts)
T5 = 6.3V / 3A
T6 = 5V / 3A
T7 = 280-0-280V / 200mA (150mA is enough)
T8 = 72V (30V is all you need)