Features: Electronics Amplifier Tubes ( EL84) deliver HiFi grade audios performances with direct compatibility for 6P14 6BQ5 6L40, and other classical vacuum tube models in guitar amplifiers and audios systems. precise matching pair/quads set (5% tolerance) ensures consistent current and transconductance, while flat cathodes design enhances electron emission efficiency for reduced noise and extended lifespans. Ideal for audiophiles, professional musicians, and audios enthusiasts seekings studio grade sound reproduction in amplifiers or high fidelitys systems. Elevates home theater setups, recording studio gear, or guitar amplifier rigs with balanced trifrequency response detailed mids, smooth highs, and punchy bass dynamics. Reinforced cooling with stampeds radiators plates and advanced glass encapsulation allows sustaineds high anode dissipation, ensuring stable operation during prolonged high performances. Specifications: Component:Glass Size:Approx.9.4x5.1cm/3.7x2.01in Compatible devices: for Various instrument, including but not limited to guitars, bass, keyboards, harmonica and vocals Anode Voltages:500v Anode Dissipation Power:12w Second Gate Voltages:300 The Second Gate Dissipation Power:2w Package Includes: 1pc EL84 Amplifier Tube note: Please allow 1-10mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.