What is your budget? Want to stay with tube or go to SS?
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Your Monitor Audio speakers are a fairly benign load on paper (90db @4 ohms) and sound transparent and quite resolving, so you don’t need a massively powerful amp, but the PL300’s need some tube-like liquidity & musicality. So i’m going to throw a curve ball at you and suggest you would get a bigger gain by selling your current amps & upgrading to a high end integrated amp such as a Pass Labs INT-250 or a 2nd hand Vitus SIA-025. Though good 2nd hand examples of the Vitus are rare on the used market.
The upshot is with one less component, you could use the savings to invest elsewhere in your system such as better cables or isolation.
YW Shamus. The Pass INT-250 is $12kUS. I crunched some numbers & reckon if you sold your current amps & used up your max budget you would be close. I think the Pass will give you all the qualities you’re looking for & would be a killer amp. The Vitus would have a more refined/transparent top end, but the INT-250 would have a bit more power/control.
" Great question. A cleaner more detailed sound, better bass control, more refined treble and improved soundstage. An all around more 'live' or natural sound. I did originally have an Opera 100w tube amp but felt it was lacking in power and a bit too warm."
That's some good info. I would demo an Ayre K-5 for SS, and for tubes I'll be the 3rd to recommend the Calipso. You can't go wrong with either.
Your amps are fine. Unless you're not happy with them for some reason, I would keep them.
If you can find one used, a TRL DUDE tube preamp will give you powerful, defined bass with the rest of the range beautiful with great clarity and a large, deep soundstage and tremendous dynamics everywhere. The unit is large as in 75 lbs. but the sound is all you could ever want. Used price will be about $3200-3800 depending on the amount of extras and custom parts. All of the DUDES are very fine sounding.
@shamus2211Your Sanders Magtech Amp has 100kohm input impedance, a perfect candidate for a passive preamp.
You could try the Schiit Sys for only $49 and it’s returnable, it also has 2 inputs.
This should give you more transparency/dynamics and a tighter/controlled bass than what you have now.
Any one knows how much does it cost to upgrade from Calypso to Calypso Signature. From what I read, Aesthetix provided such a service.
According to an email from Glenn back in June of ’16. It’s usually $2500 to upgrade from a Standard to Signature, but I think it depends on when the Standard was made. It’s $3500 to go from Signature to Eclipse and $5500 to go from Standard to Eclipse.
I thought about being the guinea pig for the Calypso Eclipse but decided just to get an ARC Ref5SE instead.
Your Sanders Magtech Amp has 100kohm input impedance, a perfect candidate for a passive preamp.
So the specs on Sanders' site are incorrect for the Magtech. According to an email from Roger, these are the correct specs:
"I designed the Magtech using a FET input stage so that it has a very high input impedance (100K) when used in single-ended mode. When used in balanced mode, its input impedance is only 1K, which is too low for many tube preamps."
No one suggested a McIntosh or an Audio Research preamp. Is that because of the price or incompatibility? Just curious.
I just got an ARC Ref5SE this week and am running it with a Sanders Magtech. My initial impressions are that it's quite a step up from my Aesthetix Calypso Signature (weightier and purer sounding), but I'll need to do further testing.
Audition the Sanders sound pre!
I absolutely love mine!
one of the best phono sections in the biz!
She is a literal straight wire with gain, as all preamps should be.
I have three preamps in rotation, most are older,, Sanders sound pre the newest.
mccormack,dedicated roll main system is amazing!
onkyo is simply amazing, does add a bit of low end, resulting in an amazing rich sound.
B&K is good, but needs a recap. She was bought new in early mid 90’s. Workhorse!
Sanders is accurate and honest!
need to hit the volume to really hit the bass needed and wanted
,,Sanders pre is superb, minus the bass extension nil at low volume, she is one of the best preamps I’ve owned!
Used or new, the Sanders pre is amazing. .
As far as needing volume for more bass extension, after a couple months (not believed by Roger) after about 100 hours, the Sanders is amazing.
Try the matching Pre by Roger.
She is amazing. Please allow a minimum of 100 hours for best sound.
mnay people sell before break in.
Give the Sanders sound pre time to warm up and stabilize.