Don't be fooled from the fact that "Tegeler" is not a well known brand name - they deserve to be up there with the best ... We're talking here for something which although not necessary for "just doing your job" it always makes you "sound" better when in use ... mix bus or "stem" stereo buses - even in separate stereo tracks... it's the kind of hardware you switch it off only to find it was CLEARLY better when "On" ... easy to "overdo" because what it does is "subtle" but "professional , punchy and tight" ... you will not hear the "transformer" sound but when your track doesn't need this ( and let's be honest - in today's commercial music there are a lot of times when our hard earned money - vintage hardware purchase just doesn't fit ) ... then it's THE business ... great build quality ! For the money : if you are serious about your music and you have the budget available , then go for it without hesitation .