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Audio Research

Audio Research I/55 Integrated Amplifier

Audio Research I/55 Integrated Amplifier

Regular price $6,950.00 USD
Regular price Sale price $6,950.00 USD
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The I/55 imports the functionality of the I/70 into a chassis that maintains the look and power output of the I/50 it succeeds. Its all-tube amplification circuit uses two matched pairs of 6550 power tubes fed by 6922 input tubes to deliver 50 watts per channel, now with auto-bias to keep the output tubes in their optimal range for life. Two LexieTubes display input selection and volume, an active preamplifier section feeds stereo preamp outputs, the headphone output is driven by the 6550 output tubes, and optional cards add an AKM Velvet Sound DAC or MM/MC phono stage.

Specifications

Dimensions 16.5 in W x 7.25 in H x 13.5 in D, 40 lbs
Display Two LexieTubes for input and volume
Inputs 4 balanced, 4 single-ended; optional DAC and MM/MC phono cards
Output taps 8 and 4 ohms
Power output 50 watts per channel continuous, 20Hz to 20kHz
Tube biasing Auto-bias
Tube complement Two matched pairs 6550WE output, three 6922 (one input, two driver)

Options & Upgrades

DAC card
AKM Velvet Sound DAC; user-installable
+$1,000
MM/MC phono card
User-installable
+$1,000
Both DAC and phono cards, factory preinstalled +$1,500

Prices shown are for the base configuration. Ask us about options and factory upgrades when you visit.

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