Hello Laurent
I just looked and actually VT-150SE is a stronger amplifier than Ref300.
In fact it is stronger than all Reference amps except Ref600 which is as strong as VT-150SE.
Energy storage: Ref300 448 joules and VT-150SE 420 joules.
Feedback: Ref300 10dB and VT-150SE 15dB.
Damping factor: Ref300 have 11 (0,8dB at 16 ohm) and VT-150SE have 16 (0,5dB at 16 ohm).
So beacause of the higher feedback VT-150SE have a stiffer output, but I assume the "sence" of Ref300 being more powerful are because of the bigger transformers that transport the power more easily.
You better get some more iron in a 60Kg amp compared to a lightweighter like VT-150SE (35 Kg)
Ref300 also use less voltage swing over the output tubes compared to the same output from VT-150SE = more linear amplification and less distortion.
Thanks for the invitation.
I live in Europe too so please send an e-mail to flex2@live.se
I just looked and actually VT-150SE is a stronger amplifier than Ref300.
In fact it is stronger than all Reference amps except Ref600 which is as strong as VT-150SE.
Energy storage: Ref300 448 joules and VT-150SE 420 joules.
Feedback: Ref300 10dB and VT-150SE 15dB.
Damping factor: Ref300 have 11 (0,8dB at 16 ohm) and VT-150SE have 16 (0,5dB at 16 ohm).
So beacause of the higher feedback VT-150SE have a stiffer output, but I assume the "sence" of Ref300 being more powerful are because of the bigger transformers that transport the power more easily.
You better get some more iron in a 60Kg amp compared to a lightweighter like VT-150SE (35 Kg)
Ref300 also use less voltage swing over the output tubes compared to the same output from VT-150SE = more linear amplification and less distortion.
Thanks for the invitation.
I live in Europe too so please send an e-mail to flex2@live.se