Electro-Harmonix KT88 Matched Quad: Powerful and Dynamic Sound The Electro-Harmonix KT88 Matched Quad tubes deliver deep, powerful bass and crisp, sparkling highs. This precisely matched set ensures exceptional sound quality and optimal performance for your tube amplifier or hi-fi setup. Key Features: Matched KT88 tubes for maximum sound quality and stability. Balanced tone with deep bass and clear highs. Highly durable construction for long-lasting performance. Ideal for tube amplifiers and high-end audio systems. Technical Specifications: Type: KT88 Beam Power Tetrode (Matched Quad) Dimensions: 11.5 cm x 4.2 cm per tube Weight: 180g (per piece) Voltage: 400V Current: 55mA Upgrade your amplifier with the Electro-Harmonix KT88 Matched Quad for an unparalleled listening experience!