Will Changing my 100 Watt Tube Amp to a 200 Watt SS Amp Solve My Problem?


Hello All,  I have a 100 watt Audio Research VT100 mk II amp, with an Audio Research LS-25 preamp.  My speakers are relatively low in sensitivity, and I find that I must turn the volume up to 3 o'clock on the preamp to get enough volume for a loud listening experience.  When I do that, I am introducing more background noise.

I would like to achieve a quieter noise floor.  I am also curious about the limits of the 100 wpc amp with the Mira Monitors.  Would an older Krell 200 watt class A amp "control" the speakers better?  If so, what are the benefits of this?  There are a few amps on this site that caught my eye, all about the same value as my amp, so I can potentially make a move with very little cost.  Is this a good idea? How much wattage increase is necessary to get a significant enough difference?  Would a jump to 150 watt solid state be sufficient?


here are the 3 amps that caught my eye:

Ayre: https://www.audiogon.com/listings/solid-state-ayre-acoustics-v-5xe-amplifier-2016-02-05-amplifiers-h...

Krell: https://www.audiogon.com/listings/solid-state-krell-ksa-250-2016-02-14-amplifiers-91754-monterey-par...

BAT:
https://www.audiogon.com/listings/solid-state-balanced-audio-technology-bat-vk-250se-bat-pak-2channe...



You can see my complete system here if you want to know more about the other components:  https://systems.audiogon.com/systems/5421



Thanks!
Mark
marktomaras

Showing 2 responses by elevick

Ok, 6 ohms isn't so bad.  However, 85db is pretty paltry.  Your AR should be able to drive almost anything sufficiently.  Although, if you do the match your max output will be about 104db-105db at 100 watts which is not close to THX or rock concert levels.  400 wpc will get you to the 110db range.  You need to borrow a pair of BIG monoblocks...

Question:  Have you had your tubes checked?  One leak/short/old tube could be adding to this if you are getting noise or harmonics when pushing it.

I still really think you need to either borrow gear from a dealer or friend.  You have 2 issues:  Noise and lack of volume.  A pair of 400 watt monoblocks will cure that.  Curing the noise issue might be trickier unless excess power solves all.  And yes, the Devialet might do it. However, it's going to be cheaper to buy new speakers...