Pass INT-25 better than Wilsenton R8?

Pass beat evry tube! Speed is so important and pass have speed.

@jetter 

The amp stages of the INT-25 and the XA-25 amplifiers share the same components & configuration. The INT-25 siphons ~25% of the power transformers output to run the pre amplifier section. I've owned both, fully broken in. For me the XA-25 paired with a Quicksilver (Duelund capped) tube line stage pre walks all over the INT-25.

Per Stereophile Measurements: "The INT-25's output power is specified as 25W into 8 ohms and 50W into 4 ohms, both equivalent to 14dBW, with a "class-A envelope" of 50W peak into 2, 4, or 8 ohm loads. With "clipping" defined as when the THD+noise reaches 1%, I found that the Pass Labs amplifier with both channels driven at 1kHz clipped at 60W into 8 ohms (17.8dBW, fig.4) and 98W into 4 ohms (16.9dBW, fig.5)"

Per Stereophile Measurements: "Pass Labs specifies the XA25's output power as 25Wpc into 8 ohms and 50Wpc into 4 ohms (both equivalent to 14dBW). However, as you can see in figs. 4 and 5, the amplifier exceeded its specified power output at the clipping point, which we define as when the THD+noise equals 1%. At that THD+N percentage the XA25 delivered 80Wpc into 8 ohms (19dBW) and 130Wpc into 4 ohms (18.1dBW)."

I also own a pair of XA-100.8 monos, and prefer the XA-25's single ended circuit topology, speed, timbre, & tonality. The XA-25 has no issues whatsoever powering my Magnepans & Quad ESL 2905's

@infection It currently has been burning in around 500 hrs. I have listened around 24hrs. 

@smodtactical I wanted to try class A solid state.