I am almost ready to make my order from MouserUK and I have kept to good quality components I think, including Nichicon, IDC and Kemet /Rifa Caps and Vishay Dale resistors.
I have ordered slightly more than I need for spares and future projects.
Also Orange drops from Watford Valves
Sprague Orange drop 715p Capacitors / CAP-OD-715-.47/400V
https://www.watfordvalves.com/product_detail.asp?id=1357Can anyone say how important the tube bases are and which type to go for
'9 pin B9A Belton VT9-ST-2 is a very high quality Micalex valve socket for chassis mounting'https://www.watfordvalves.com/product_detail.asp?id=1887or
Russian military grade ceramic chassis mount B9A with vented screening can.Ideal for all ECC83 types and for high grade audio use.https://www.watfordvalves.com/product_detail.asp?id=427'These were made for the Russian military and as you can see from the pin pattern they were designed to give a very tight fit so the valve would not come loose. Ideal for all ECC83 types and for high grade audio use. The socket requires a 22mm cut out so will not fit in old vintage amps as they normally have a 19 mm cut out. These are the best qualiceramicaic bases that we have come across and are ideal for small amplifier builders.'
I also have a question about the power supply.
As I am in the UK I will be going for the Hammond 369EX with Mouser
However there is an alternative for half the price for Primary Windings in the UK and it's the
AMP MAKER PWAM03D 190V – 0 – 190V @ 80MA 6.3V @ 2A
http://primarywindings.com/product/amp-maker-pwam03d-190v-0-190v-80ma-6-3v-2a/This power transformer is designed as a replacement or alternative for those popular amp circuits that specify the Hammond 269EX or 369EX power transformer. It has dual 120V/240V primary windings and two secondary windings. The high voltage winding is 190-0-190V rated at 80mA. In a typical circuit, this will produce a B+ of around 250V after smoothing.
The heater supply secondary is a non-CT 6.3V rated at 2A. That makes it perfect for an amp using two 12AX7s and a single EL84 or 6V6, or a channel-switching preamp using as many as six 12AX7 valves.This is what they say about their transformers
'The PWHT range of transformers are superb transformers for general purpose use. Using Grain Orientated M6 silicon steel, core losses are reduced.
All our wire is grade 2 enamelled copper wire. This ensures the insulation between turns is extremely high.
All our transformers are resin impregnated with a modern varnish that improves electrical insulation, heat conductance and reduces vibration.
Many cheaper transformers will push the flux density to the limit to reduce the copper used, and increase their margins. Here at Primary Windings we believe that the flux density should be set to allow for mains variations, and the reduction of external magnetic flux, that can cause problems with circuit layout, due to coupling with this stray flux. Lower flux density also allows the reduction of noise from the transfromer. We are proud of our designs, and work to ensure that we produce the best transformers at a reasonable price.'John who is the owner and designer made me a brilliant transformer and choke for my EAR 834P Phono Clone project.
Answers on a postcard or better still this forum.
Thanks for your help and patience