The INT-250 and INT-60 are not
literally identical to their
stand-alone counterparts the X-250.8
and XA-60.8; in particular the
INT-60 is a stereo amplifier using
the hardware of a single channel
XA-60.8, and it necessarily has
lower bias current in the output
stage and does not operate Class A
to 60 watts, rather somewhat less
than half that.
Nevertheless, the essential details
that deliver the sound of the .8
series have been tweaked in
subjective testing, and the result
is very close. There are a couple
new wrinkles to the “preamp”
portions of these two products. The
volume control circuit outputs are
buffered by 6 dB gain stages whose
input JFETs present many megohms of
load, getting attenuator distortions
down below the .001% line. The extra
gain allows optimal figures for the
power amp stages, and offers
improvement over the previous
“passive” circuits.
The output noise figures of the
integrated amplifiers are a little
higher than the stand alone
amplifiers, but after you figure in
the noise of a separate preamp
external to the amplifier, it comes
out about the same, so I don't think
you lose out on noise performance.
Did I mention that we included the
meter on these? Yes, we have the
meter just like the other Point 8
amps.
Finally, credit goes to Wayne
Colburn, usually our preamp
designer, for the work integrating
new preamp circuits into these
amplifiers.
Wayne and I and the rest of the
people at Pass Labs sincerely hope
these products enrich your listening
experience for many years.
Nelson Pass
Specifications
- Class: AB
- Type: Stereo
- Gain (dB): 30/36
- Volume control (1dB steps): 63 dB
- Remote: Yes
- Inputs: 4
- Outputs: 2
- Frequency Response: -6 dB @ 80 KHz
- Power Output /ch (8 ohm): 250
- Distortion, (1 KHz, full power):
1%
- Input Impedance (Kohms) ea Leg: 45
- Damping Factor: 150
- Output Noise (uV): <250
- Input CMRR (dB): -60
- DC Offset (V): 0.05
- Leaves Class A pk: 15
- Power Consumption (Watts): 450
- Dimensions (W x H x D): 19 x 21.25
x 9.1
- Weight (LBS): 105 |