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The Fosi Audio BT20A Pro is a Bluetooth 5.0 stereo amplifier with a TI TPA3255 chip and a maximum output of 300W x 2 at 4Ω. It accepts Bluetooth and RCA inputs and connects to passive speakers, with a full-range pre-out for a powered subwoofer, speaker, or additional amplifier.
Specifications include a 2–8Ω terminating impedance, 20Hz–20kHz (±1.2dB) frequency response, THD ≤0.005%, and SNR ≥108dB. Bluetooth supports SBC and AAC, with transmission distance up to 50Ft. The amplifier measures 5x5x1 inches, accepts 24–48V DC input, and lists 32V 5A or 48V 5A power supplies.
Its two plug-in NE5532 op-amps are replaceable, with examples including LME49720HA, MUSES02, OPA2134PA, OPA2604AP, and SS3602. Bass and treble controls support sound adjustment; set both to their center positions for a neutral listening experience. Bluetooth pairing is initiated by holding the volume knob for five seconds, and the unit includes memory pairing and an alert tone. Idle power consumption is under 2.5W.
This product is sold brand new. A manufacturer warranty applies only when the manufacturer provides one for this item.
Return requests must be submitted within 14 days of delivery and approved by our RMA department before the item is shipped back. Non-defective returns may be subject to a minimum 25% restocking fee and return shipping charges. Unauthorized returns are not eligible for credit or refund. Read the full return policy.
This product is sold brand new. A manufacturer warranty applies only when the manufacturer provides one for this item.
Return requests must be submitted within 14 days of delivery and approved by our RMA department before the item is shipped back. Non-defective returns may be subject to a minimum 25% restocking fee and return shipping charges. Unauthorized returns are not eligible for credit or refund. Read the full return policy.