In addition to the main volume, treble, and bass controls, this amplifier features a dedicated bass volume control for enhanced audio customization and high-quality music playback. Bass, treble, and volume adjustment: Equipped with a power switch and rotary knobs for precise main volume control, allowing customizable sound settings to suit personal preferences. Compact design: Sleek and durable matte silver metal housing with a refined appearance. The compact and unique structural design enables easy installation in vehicles, boats, RVs, golf carts, or home audio setups, saving space and ensuring convenient operation. Wide application: Operates on DC 12V input, suitable for various environments including cars, boats, RVs, golf carts, and home audio systems. Delivers low distortion and accurate acoustic reproduction for an immersive listening experience. Product Name: Car Audio Channels: 2.1 Amplifier Type: HIFI Power Amplifier Audio Input: Stereo L/R RCA, 3.5mm AUX Audio Output: Speaker terminal block, subwoofer output Bluetooth: Not supported Input Voltage: DC 12V/2A Effective Output Power: 20W x 2 + 40W Maximum Power: 200W + 200W Compatible Speakers: Supports two speakers and one subwoofer Speaker Impedance: 4-8 ohm Frequency Response: 20Hz - 20kHz Total Harmonic Distortion: 0.004 Signal-to-Noise Ratio: 80dB Resolution: 47K Operating Voltage: DC 12V Dimensions (L x W x H): 150 x 92 x 34mm / 5.91 x 3.62 x 1.34in Note: Product labeling may vary slightly between manufacturing batches, which does not affect performance or functionality. Color: Silver Material: Metal Package Includes: 1 x Car Stereo Amplifier Note: Lighting and display differences may cause slight variations in color between the product image and actual item. Measurement tolerance: +/- 1-3cm.