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Quick Overview The Dayton Audio HTA20BT combines the efficiency and power of solid state class AB amplifier topology with the warmth and character of a vacuum tube preamp section. The results are a delightfully articulate and natural sound that is sure to please even the most refined ears. Product Highlights Tube warmth, class AB efficiency Bluetooth 4.2, Aux, and USB inputs Subwoofer output for adding an active subwoofer High quality headphone amplifier built in Extremely low THD <0.1% @ rated power Product Manuals / Spec Sheets / Downloads Dayton Audio HTA20BT User Manual AddThis Sharing Buttons Share to FacebookFacebook Share to TwitterTwitter Share to MoreAddThis 4 Product Description The Dayton Audio HTA20BT hybrid tube amplifier utilizes dual 6F1 vacuum tubes along with the efficient TDA7491HV to provide an unparalleled audio experience. The subtle character and warmth introduced by the tubes create a delightful homage to the classic valve amplifiers of the past. With a power rating of 12 watts per channel at 4 ohms, and an astonishing THD of <0.1% make the HTA20BT a great solution for near field applications. Bluetooth 4.2 ensures the best possible audio quality and functionality with any wireless device. Dual rear ed RCA inputs allow for more long-term connection of larger audio devices, while the USB input on the front will read most common audio formats including FLAC, APE, WAV, MP3, and WMA. Easy access onboard controls allow for track selection at your fingertips. A dedicated sw headphone output allows the HTA20BT to double as a high quality headphone amplifier, while the high quality binding posts ensure a solid connection via either banana plugs or up to 14AWG speaker wire. Specifications: • Power output: 12 watts RMS x 2 into 4 ohms • Total Harmonic Distortion: <0.1% @ 12W per channel • Minimum speaker impedance: 4 ohms • Frequency response: 20-20,000 Hz ±2 dB • Channel Separation: 65 dB • Dynamic Range: >80 dB • Signal-to-noise ratio: >80 dB • Preamplifier tube: 6F1 x 2 • Headphone amp output: 3.5mm, 15 mW @ 600 ohms; 11 mW @ 300 ohms; 7.8 mW @ 32 ohms; 5.6 mW @ 16 ohms (maximum @ 1 kHz, <1% THD+N) • Transistors: Toshiba 1941/5198 • Bluetooth version: AC6905A CSR 4.2 • Input impedance: 47k ohms (minimum) • Input sensitivity: 300 mV • Power: 110/220V, 50/60 Hz • Dimensions: 4.2" H x 9.3" W x 6.18" D. Product Details Model Number HTA20BT List Price $181.84 Color Black Unit of Measure Each UPC 848791005121 Warranty - Parts 5 Years Warranty - Labor 5 Years Product Shipping Weight (lbs.) 4.6 Product Weight -- Product Height 4.2" Product Width 9.3" Product Length -- Product Depth 6.18"