BLT POWER AMP BOARD WOOFER 220WX2 +350W S350H

Description

The 2.1 CH BLT Power Amp Board (220 W × 2 + 350 W) is a powerful and versatile Class D amplifier module ideal for DIY audio builds, Bluetooth speaker systems, and home theater setups. It delivers stereo 220 W per channel for left and right outputs and up to 350 W for a dedicated subwoofer output. Multiple input options (Bluetooth, AUX, USB drive, USB sound‑card) and integrated app control offer flexible connectivity and ease of use. The board provides robust protection and is designed for high efficiency and thermal stability.

Key Features:-

High‑Power 2.1 Output: Up to 220 W for each stereo channel and up to 350 W for the subwoofer (with suitable voltage and impedance).

Bluetooth v5.1 (or compatible): Supports modern wireless streaming with improved stability and range. Some variants allow renaming the Bluetooth name and setting a pairing password through an accompanying app.

Comprehensive Protection: Built‑in safeguards against reverse polarity, undervoltage, overcurrent, short‑circuit, overheating, and clipping. The system typically resets automatically without needing a restart.

2.1CH BLT POWER AMP BOARD WOOFER

Multiple Inputs: AUX (3.5 mm), USB flash drive (FAT32, up to 32 GB), and USB sound card mode via integrated control knob. Mode and track switching through the rotary encoder.

Tone Control: Individual rotating knobs for volume, bass and treble—to tailor sound output.

Efficient Cooling: Large aluminum heat sink and ultra‑quiet fan support extended full‑power operation.

Specifications:-

Model / Series XY‑S350H / ZK‑AS21 (“2.1 CH BLT Power Amp Board 220W×2 + 350W”) Bluetooth Version v5.1 (backward compatible)

Inputs Bluetooth, AUX (3.5 mm), USB flash drive (FAT32 ≤32 GB), USB sound card

Control Interface 360° rotary encoder (mode/track/volume tuning)  Stereo Output (L/R) ≤ 220 W/channel @ ~3 Ω (down to ≈100 W @ 8 Ω)

Subwoofer Output ≤ 350 W (e.g. ~355 W @ 2 Ω, ~250 W @ 3 Ω) Recommended Speaker Load L/R: 3–8 Ω (30–220 W); Subwoofer: 2–8 Ω (30–350 W)

Frequency Response ~20 Hz to 20 kHz  Weight & Dimensions ~285 g; approx. 130 × 116 × 27 mm (L×W×H)

Power delivery optimization: to unlock maximum power (220 W per channel / 350 W sub), a higher voltage near 36 V with low speaker impedance is necessary. Lower voltages (12–24 V) will limit maximum output regardless of current capacity.