Markus I believe you when you are saying not intending to slam anybody else but the result will be that, in fact the result might even be slam the Supra, I have experience with different pre’s and everyone is different for good and bad and it wouldn’t be fair to compare these, specially on a Supra thread, I know is your thread but I am going to pass and I think others should too.
I love my Supra, does bass extremely well (like a SS), the cheap stock Russian EH tubes sound incredible (this have put in perspective my opinion about rolling tubes, it is not the tubes so much but the designers purpose with it), my wife likes the chrome and the wood matches her furniture perfectly (now that’s a big plus as she gets off my back, she asked me and I had to invent a story the preamp someone sent it to me to tune it, she doesn't know I purchased it), it is very musical and enjoyable, you have dual sections (mine is the cab dual) today I tested levels SPL, Mick matched the DHT and 6SN7 sections perfectly.
Like everything in life the Supra has tiny little shortcomings when compared to other preamps, but that doesn’t mean is not a great preamp,
I love my Supra, does bass extremely well (like a SS), the cheap stock Russian EH tubes sound incredible (this have put in perspective my opinion about rolling tubes, it is not the tubes so much but the designers purpose with it), my wife likes the chrome and the wood matches her furniture perfectly (now that’s a big plus as she gets off my back, she asked me and I had to invent a story the preamp someone sent it to me to tune it, she doesn't know I purchased it), it is very musical and enjoyable, you have dual sections (mine is the cab dual) today I tested levels SPL, Mick matched the DHT and 6SN7 sections perfectly.
Like everything in life the Supra has tiny little shortcomings when compared to other preamps, but that doesn’t mean is not a great preamp,