Tubes Selection....I spent extended time listening to my music collection with different tubes at various location of the signal path. The objective was to find the right tube (not the best) for Inputs and Phase Inverter position. After several swaps of tubes and positions heres my personal findings:
- Siemen, has better clarity and resolution.
- Philips, a bit shy in that position but gives same performance at inputs.
- Telefunken, performs well at PI position but even greater impact in the inputs, as others were saying about this tube, more details, also better high frequencies and clear damped (controlled) bass.
- Fisher (Mullard/white writing) original input tube
- Fisher (sylvania/yellow writing) orinal PI tube
Please note, this only my personal subjective opinions based on my system's performance with different tubes in the circuit. the tubes mentioned may performs differently with other preamps/amps.
Thanks...