INT-25

AED 28,015.00 (Exc. Tax)

The INT-25 integrated amplifier embodies all this and less. A smaller stereo Class A amplifier at a lower price, it takes advantage of the lower power requirements to have simpler single-ended circuitry and fewer parts in the signal path. This also allows the elimination of degeneration, “that other negative feedback” in all stages.

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Description

DESCRIPTION

Twenty plus years of ongoing innovation have kept the X and XA amplifiers at the forefront of high-end audio.

The INT-25 embodies all this and less. A smaller stereo Class A amplifier at a lower price, it takes advantage of the lower power requirements to have simpler single-ended circuitry and fewer parts in the signal path. This also allows the elimination of degeneration, “that other negative feedback” in all stages.

Simpler and fewer gain stages improve speed and stability. Lower voltages mean the ability to run gain devices at higher bias currents, more deeply into Class A. Newer power Fet technology replaces banks of parallel small transistors with a single pair of industrial devices, each having a 700 watt / 40 amp rating. With no current-hogging issues and a new constant-current bias circuit to compensate for temperature drift, they connect directly to the loudspeaker without ballast resistors for the lowest possible distortion and highest damping factor. No degeneration also increases the efficiency and Class A operating current, allowing greater Class A operation into low impedance and reactive loads.

The simple front end circuit uses two pairs of our favorite NOS complementary Fets in common-source mode in a current feedback (CFA) configuration.

The preamp section is a simplified single-ended version of the one used in the INT-60 and INT-250 with three line-level inputs and no line-level output.

Everything was done in the signal chain from the microphone to the loudspeaker, forever leaves an indelible mark on the music. The XA25 amplifier section is direct-coupled requiring no DC servos or frequency compensation, neither adding too nor subtracting from the experience.

As with all Pass amplifiers, technology and construction are strictly in the service of the listening experience. The INT-25 measures superbly, but its subjective qualities are most special. In an industry where products with great specs are often found to be dry and boring, this amplifier breathes new life into the music.

Class A
Type Stereo
Gain (dB) 29/35
Volume control (1dB steps) 63dB
Remote yes
Inputs 3
Outputs 0
Power Output /ch (8 ohm) 25 Watts
Power Consumption (W) 200
Standby Power Consumption (W) <1 Dimensions (W x H x D) 17 x 17.375 x 6
Weight (LBS) 49

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