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): 29/35
- Volume control (1dB steps): 63 dB
- Remote: Yes
- Inputs: 4
- Outputs: 2
- Frequency Response: -6 dB @ 80 KHz
- Power Output/ch (8 ohm): 60
- Distortion (1 KHz, full power): 1%
- Input Impedance (Kohms) ea Leg: 45
- Damping Factor: 150
- Output Noise (uV): <250
- Power Consumption (Watts): 375
- Temperature (deg C.): 53
- Dimensions (W x H x D): 19 x 21.2
x 7.6
- Weight (LBS): 93 |