Using technology from their reference level products is desirable and allows lower cost items to benefit from advances and offer great value, but it doesn't mean that their performance is at the same level. Many companies do this but it's in the details of the implementation where there are still differences. While they may use the same basic circuit topology the less expensive models are built with lower cost parts and not necessarily to the extreme level of their best gear. There's a reason that they continue to make their reference level gear even after trickling down the technology into lower cost models.
Of course this is true, however the point I was making is that T+A builds top notch gear across the board, and more so then many companies; they use many of the same design criteria even in their lower prices products.
"The input stage and the voltage amplifier stage also work at higher voltage potentials (HV = high voltage concept). The input stage is a cross-coupled J-FET cascode amplifier and the voltage amplifier stage is a single-ended Class A Hawksford FET cascode. The output stage takes over the current amplification and is equipped with ThermalTrak TM audio high-performance transistors for absolutely stable and inertia-free working point stabilization. The voltage amplifier stage and the current amplifier stage are completely separate from one another and have their own power supplies…"
Looking at their own descriptions and parts used it is clear that extreme high level of parts are used even in their more modestly priced models. Certainly not the same as their highest end models but certainly high quality, and maybe a tad above what many other companies do in similar price ranges.
Specifications Amp 8 versus HV amps (simply as an example):
Freq response 1 Hz - 200 kHz | 0.5 Hz - 180 kHz
slew rate 60V/us | 60V/us
damping factor >170 | >65
S / N ratio >110 dB | >115 dB
THD <0.009% | <0.03%
Very much in line with their top models and better than many other manufactures amplifiers.
Not saying they out do other companies and certainly not saying their lower models are better than other companies higher models, just making the point that they are top notch German designed and manufactured equipment that will surprise many people if they checked them out, even their more modest models.