YJCO Digital HIFI Home Amplifier TPA3221 105W*2 Bluetooth 5.1 APTX HD Audio Power Amp with Dual VU Meter for Passive Speakers

Package:Power Amplifier *1No Power Adapter IncludedSpecificatons:Product Model: D200AInput Interfaces: RCA, BluetoothAmplifier Chip: TPA3221 ×1Bluetooth Version: Bluetooth 5.1Frequency Response: 20Hz–20kHzPower Supply: 24V–32V DCBluetooth Chip: QCC3034Bluetooth Decoder Chip: PCM5102Output Power: 105W × 2 / 4Ω (measured at 32V)Total Harmonic Distortion (THD): 0.5%Compatible Speakers: 10W–200W, 4Ω / 8Ω / 16ΩBluetooth Range: 10 metersProtection Features: Reverse polarity protection, short-circuit protection, auto-recovery thermal protectionWeight: 850gDimensions: 135mm × 156mm × 46mmDC Power Jack: 5.5×2.5mmIntroduction:The D200A is a device that combines aesthetic appeal with exceptional sound quality. It boasts powerful functionality, robust output power, and pristine audio performance. Equipped with an all-analog VU meter, it delivers a retro-inspired yet contemporary look.The D200A is built with premium components that reflect thoughtful engineering. Its gold-plated RCA connectors ensure long-lasting durability. A large heatsink guarantees stable operation even during extended use, while high-capacity filter capacitors deliver cleaner, more stable power supply with reduced ripple. The amplifier uses Texas Instruments' TPA3221 chip, delivering 105 watts per channel for truly impressive power output. The op-amp is a JRC5532 in a socketed design, allowing users to upgrade to higher-performance op-amps easily. For wireless connectivity, it features a QCC3034 Bluetooth module supporting aptX HD lossless transmission, paired with a PCM5102 Bluetooth decoder, enabling wireless audio performance comparable to wired connections.Operating Instructions1.The D200A output is designed for passive speakers only. Do not connect it to active speakers or constant-voltage loudspeakers.2.The amplifier operates on DC 24V–32V power supply. Higher voltage yields greater output power, but do not exceed 32V, as this will damage the unit. The power plug is 5.5×2.5mm (center positive, outer negative).3.Do not connect the negative terminals of the left and right speaker outputs together, as this will cause permanent damage to the amplifier.4.To connect via Bluetooth, search for the device named "YJHIFI" and pair.