oversize power transformer

[Manolo47]

Greetings: I built the Pass BA-3 line stage using the Salas shunt regulated power supply. I gather that the current rating is what the transformer is capable of, in case that current output is needed.... I know that I could have used a a 25 or 50 VA 20v transformer but I got a 100 VA Antek..... 1.2 A.

So, my question is, if I install a 400 VA 20v transformer with a 12 A capacity, an overkill I guess, but will it produce any issues?

Reasons for considering this: Have read over the years about the virtues of having oversize capacity transformers in audio. Allen Wright recommends or mentions it in his book. Also from experience, In the 80’s I had a PS Audio IV preamplifier which got a lot of accolades, sounded pretty good. Then this upgrade from the factory came about, an oversize transformer. It really changed the sound presentation for the better; better controlled bass and a more defined soundstage. Had it for many years. Thanks!

 

[analog_sa]

an overkill I guess, but will it produce any issues?

None. IME it will sound different to the 100VA transformer, but not necessarily better. It seems there are a lot of other factors apart from size which contribute to transformer sound.

 

[cbdb]

Power transformers dont have a sound, they may effect the sound if the they arnt big enough and cause premature clipping, or if the PSRR is poor. The only reason I can see for a preamp maker to send an "upgrade" is the original was underspeced. If the amp was designed properly, The only difference your new transformer will make is to lighten your wallet. Your kinda saying Nelson didnt know what he was doing.

 

[olsond3]

Transformers were great in 1950. Sure, they work fine. I got tired of paying so much and hauling around the weight. There are switching power supplies. I recently used several of these. Light, affordable, easy to use. 24V4A/5V1A Dual Switch Power Supply Board Module 120W Power Module Isolated Dual 6256299544587 | eBay

 

[cbdb]

Agreed but there seems to still be an aversion to these, the audio myths linger long time Obiwan.

 

[50AE]

Like analog_sa said, an oversized transformer won't sound necessarily better. Core material, winding technique, insulation and construction materials will play this role the better.