Hybrid Integrated Amps


There are many discussions here on audiogon concerning hybrids vs all tube integrated amps. There are some who believe some hybrids have the capacity to sound like an all tube integrated.

I currently own a Rogue Cronus Magnum 3 with NOS tubes in the pre-stage and KT77s power tubes. I love the midrange bloom, the highs are smooth and the bass is quite tight. Previously I owned the BAT VK-3000 hybrid, Pass Int-30A and other amps throughout the years but none had that tube magic I so much enjoy. After reading reviews and making some inquiries about the new Pass Int25, it doesn’t seem to sound like a tube integrated but all did say it’s very musical.

Any thoughts?




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Showing 1 response by verdantaudio

A big part of this is what tubes you are running in the input stage of the amp.  I have been doing a test with a hybrid integrated from Canor and have swapped in three current production tubes vs. NOS pairs. NOS tubes make a HUGE difference.  

In the end, a hybrid will never sound quite as good as a tube amp or integrated but they are capable of being much better their SS or Class D only brethren.  

I have had five different hybrid amps in here in the past few months (Two Rogues, a Canor and two AVMs) where I have spent significant time with them.  Four were Class D and one is a Class AB. All of them sound very good and in some cases sound very close to my Art Audio KT88 based monos as a benchmark. 

It is just essential that they are given adequate burn in time as tubes really need 30-50 hours to sound right at minimum and we have to accept that a $17 pair of Russian re-issues may not deliver end-game sound quality.  You are probably going to need to go out and spend a little on decent tubes.