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Vacuum tube preamplifier using 12AX7 x4. Frequency response: 10Hz-100kHz (±2dB). S/N ratio: 91dB. Five RCA inputs (LINE1-5), three RCA outputs (OUT1-3). Input sensitivity: 250mV / 100k ohm impedance. Output impedance: 700 ohm. Four-band parametric equalizer (150, 400, 2k, 10kHz, ±10dB) with on/off switch. L/R balance control. Remote control for volume, mute, input selection, and equalizer on/off. Dimensions: 340x310x185mm, 10.5kg.

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TRIODE - TRX-4 (Vacuum Tube Pre-Amplifier) Japan JP $2,866 Jun 29, 2025

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