Here is a list of optional parts that may be requested to be used in your amps. Please be advised that some of these products can be expensive and can contribute to high build costs. I have a reliable supplier for each of the following products and sourcing them will not be an issue. Please contact me for a quote.

Signal/Filter Capacitors

Angela/Jensen Aluminium Foil Paper In Oil 

Sequa Paper In Oil

Angela/Jensen Copper Foil Paper In Oil

NOS Russian K40Y Paper in Oil

All Mundorf Series

Audio Note

Hovland Film and Foil Polypropylene 

Auricap

ASC Oil Filled Caps

V-Cap

Solen

Electrolytic Capacitors

Sprague Atom

German FT caps

Black Gate

Nichicon

Elna

JJ caps

Signal Resistors

Allen Bradley

Kiwame

Riken

Audio Note Tantalum

Shinkoh Tantalum

Mills

Connectors (binding posts and RCA input jacks)

Furutech

Audio Note

Cardas

WBT

Kimber

James

Tube Sockets

Audio Note

Azuma 

Connex Machined Teflon 

James Teflon

Transformers

James

Hashimoto

Audio Note

One Electron

Sophia Electric

Hammond

Lundahl

Antek

Current Production Tubes

TJ Tubes

JJ Tubes

EML Tubes

Sophia Electric Tubes