Check the listing for details. One Pair 300B Monoblock Vacuum Tube Amplifiers Class A HiFi Power Amplifier. Color: Black, Condition: New. Listed at 820.00 USD. One Pair 300B Monoblock Vacuum Tube Amplifiers Class A HiFi Power Amplifier PSVANE 300B: PSVANE 300B ×2, Features 1. Monoblock Design: with independent power supply and signal ground wire, deeper degree of separation than most amplifiers on the market which can bring much stronger sound filed. 2. Higher sound quality: broadband and good ductility of treble and bass make sound more dynamic and the sound filed more deeper providing wonderful listening feast. 3. Lossless audio quality and little noise: multistage CLC filter circuit makes background more quiet and the details more excellent; adopting high and low voltage winding power supply independently to achieve higher output power. 4. High-end Material: Japan Z11 Transformer, Philips, Siemens capacitors with high voltage; German red WIMA capacitor with good density of sound field, Japan ALPS27 potentiometer, US 24K gold-plated connection terminals and so on. Parameters Type: Single-Ended Class A Output power: 10W×2 Input sensitivity: 500mV-2000mV Input impedance: 100KΩ Frequency response: 20HZ-30KHZ Signal to noise ratio: 98dB Dimensions(W×H×D): 102 × 335 × 352 mm (excluding the Protruding part) Weight: 24KG Packing List 1 Pair * Tube Amplifier 1 Pair * Power Cord