[mresseguie]

Jason,

This question is directed to you specifically, but anyone else who has heard both is welcome to chime in.

I own the Evo STA, and  really like it. I've used it with my 96.5dB floorstanding speakers, 86dB bookshelf speakers, and took it to a friend's house to play in his system. It's always sounded excellent. It's a keeper. According to your amp comparison chart, the Evo STA and the STA-9x have very similar sound characteristics. [ https://nuprimeaudio.com/guides/amp-comparison/ ] I'm once again seriously thinking I should buy a pair of STA-9x amps for my home in Taiwan. I've got a pair of Fritz Loudspeakers LS/R-5 speakers which are 82.5dB, so they need serious power to sound their best.

If someone were to directly compare an Evo STA to a pair of STA-9x (in dual mono mode), would he/she be able to discern a difference? Their prices sure are different. Are dual STA-9x amps little giant killers? The Evo STA delivers 40A of current. How many Amps of current do 2x STA-9x deliver?

I found this information:
STA-9X Specifications (per amplifier)
Stereo Mode: 2 x 130W @ 8 ohms, or 2 x 200W @ 4 ohms.
Mono Mode: 300W @ 8 ohms, or 320W @ 4 ohms.
Rated/Peak Current: 10A / 15A.

Does the rated/peak current remain the same while in dual mono mode, or does it increase?

Regards,

Michael

[rustydoglim]

This comparison chart has been revised many times with feedback from our chief engineer and audiophiles.
https://nuprimeaudio.com/guides/amp-comparison/

The EVO STA-SE is scheduled to ship in late November, with factory upgrades available for existing EVO STA owners. Designed for ultimate performance, the EVO STA-SE aims to match or even surpass flagship Class A amplifiers like the CH A1.5, which the EVO STA was favorably compared to in HiFi Advice’s review.

[mresseguie]

Thank you.

Will the EVO STA-SE have the same power into 8 and 4 Ohm loads, or is there an increase in power?

[AllanS]

Totally tangential but this is a rarity:
https://tmraudio.com/fresh-arrivals/nuprime-evolution-sta-stereo-power-amplifier/

I browse TMR fresh arrivals pretty much every day.  The “and sounds wonderful” comment is saved for relatively few listings.

[mresseguie]

Totally tangential but this is a rarity:
https://tmraudio.com/fresh-arrivals/nuprime-evolution-sta-stereo-power-amplifier/

I browse TMR fresh arrivals pretty much every day.  The “and sounds wonderful” comment is saved for relatively few listings.

Allan,

I heartily agree with the 'and sounds wonderful' comment - so much so that I'm going to buy an Evo STA SE in a couple months for my place in Taiwan. [A BIG  to John Casler and Jason for helping me make my decision!]