Вот тут
http://www.mylespaul.com/forums/squawk-box/59562-blackstar-ht-5-thougths.html написано, что он вроде бы как гибриндый, но не в традиционном понимании, потому как все полезные искажения делают лампы. А транзисторные компоненты предусиливают сигнал.
So, is the Blackstar a hybrid? I say it isn't in the "traditional" sense. Yes, the Blackstar does have some solid state components (op-amps) in the signal path. However, the solid state components DO NOT PROVIDE ANY CLIPPING. All signal clipping done by the Blackstar HT5 is done in the tube section and most of that is done in the preamp tube section.
А что еще важнее:
I corresponded with a Blackstar engineer about the circuitry inside the amp. One thing I was told, and he was very stubborn about it, was how clipping is done in the amp. Here is a quote from one of the emails about it.
"The HT-5 preamplifier is based on the HT-Dual pedal. As is the case in the
HT-Dual, we use solid-state circuits to provide "pre-gain" before the ECC83
valve. The diodes are part of this "pre-gain circuit" and are used to limit
the signal level being driven into the valve and hence maintain the correct
operating conditions for the valve in this application.
Most importantly, the valve is the last amplification (and clipping) device
in the signal chain and the overall gain structure is designed such that the
compression and harmonics you hear are generated solely from the valve
itself."
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