Rolling a whole bunch of 6SN7 Vacuum Tubes!
Link to Quality Vintage Tubes: https://valvesnmore.com
Exercise Caution with 5692 Tube, Plate voltage is a Maximum 275vdc and Plate dissipation is a Maximum 1.75w, putting it below even the original 6SN7GT!
Note: Reviewed mullard 5692 tube is in fact a rebranded Russian 6N8S (aka FAKE Mullard), the 6N8S is a good tube and a fine 6SN7 equivalent, but definitely not a Mullard!