i would concur to what has been said regarding the ref 75
mine is not an SE version - i have higher efficiency speakers so do not need the extra drive of the kt150’s but in my system with the amp running kt120’s the sound is wonderful...
there is a cleanliness and utter purity to having just a pair of output tubes per side compared to four of them... i feel this has been true all the way back to the VT series where the smaller VT50-60 versions plays cleaner and purer (and for longer) than the larger brethren VT100/Ref110 models with double the output tubes
...of course you need to have speakers that can be driven properly with the available power of the smaller amps to benefit from this
mine is not an SE version - i have higher efficiency speakers so do not need the extra drive of the kt150’s but in my system with the amp running kt120’s the sound is wonderful...
there is a cleanliness and utter purity to having just a pair of output tubes per side compared to four of them... i feel this has been true all the way back to the VT series where the smaller VT50-60 versions plays cleaner and purer (and for longer) than the larger brethren VT100/Ref110 models with double the output tubes
...of course you need to have speakers that can be driven properly with the available power of the smaller amps to benefit from this