TPA3255 2x300W Class D stereo Hi-Fi amplifier module, DC 19–52V, standard power supply

TPA3255 AUDIO AMPLIFIER – 2 x 300 W, CLASS D, STEREO HIFI

Operates on a standard DC power supply.

A high-power stereo amplifier module based on the Texas Instruments TPA3255 chip with PurePath™ Ultra HD technology. It combines Class D efficiency (over 90%) with low distortion across the entire audio frequency range. Ideal for Hi-Fi systems, floorstanding speakers and passive subwoofers, as well as DIY projects.

Key features

• Power output up to 2 x 315 W at 4 Ω (THD 1.5%)
• Wide input voltage range from 19 V DC to 52 V, laboratory-tested at 60 V
• Differential input with a TL072 operational amplifier (JFET input), delivering a warm and natural sound
• Tantalum capacitors at the input
• 63 V filter capacitors from Nippon Chemi-Con / Nichicon
• Toroidal output transformers and high-current-rating CBB capacitors
• Low standby power consumption, below 2.5 W
• 5 V auxiliary output for powering a Bluetooth module or a player
• Upgraded version (2023)

Specifications

• Chip: TPA3255
• Model: SAMP-100
• Power supply: DC 19–52 V
• Channels: 2 (stereo)
• Output power (per channel): 315 W / 4 Ω (THD 1.5%), 260 W / 4 Ω (THD 1%), 185 W / 8 Ω (THD 1.5%), 150 W / 8 Ω (THD 1%)
• Speaker impedance: 4–8 Ω
• Frequency response: 20 Hz – 20 kHz
• SNR: > 111 dB
• Dynamic range: > 100 dB
• Efficiency: > 90%
• Dimensions: 136 x 73 mm
• Mounting hole spacing: 128 x 66 mm

The set includes

• 1 x amplifier module
• 1 x accessory kit

Please note: the power supply is not included in the set. Full power is achieved with a 48–52 V supply from a power supply unit with sufficient current capacity. At lower voltages, the output power will be reduced.