What Class A is better? SUGDEN FPA-4 or PASS LABS XA-25

mattmiller,

Try enter  www.sugdenaudio.com

Opinions need to be more supported.

I had an all Pass Labs system for 10 years and loved it. I have never heard a product by Sugden, however, by just observing the interior construction of both units, the Pass by mile.
I am not a guru.

https://2.bp.blogspot.com/-gXjwOj25oME/WdaEY45K0uI/AAAAAAACVwY/G6jq0ALxD2MVJlDzTUH3ZU1TghgwtszuACK4BGAYYCw/s640/22196086_1046558578813198_9049732347851855016_n.jpg

The company was founded by James Edward Sugden in England in 1967, a division of Research Electronics. Research Electronics manufactured scientific instruments and test equipment, designed by James Sugden, for Universities. The A21 was the first amplifier to be put into production and was originally branded for a well known local loudspeaker company called Richard Allan. 
The opinions should be well supported.
I said experiences of the gurus.

Nelson Pass has been around for decades! Who is SUGDEN? Pass by a mile! (pun intended) :-)

Pass by a mile.