Douk Audio L1Mini Stereo Line Level Booster Amplifier 20dB Gain Volume Control Audio Preamplifier

【Important Notice for International Buyers – Tomoayax Premium Audio Hi-Fi Japan】

■ Voltage Compatibility This product is designed exclusively for use in Japan (AC 100V, 50/60Hz).

Many regions use 120V or 220–240V. Using this product without a proper transformer in such voltage environments may result in malfunction, overheating, or serious and irreversible damage.

■ Plug Type This product uses a Japanese plug (Type A or B). A plug adapter may be required depending on your region.

■ Transformer Requirement (Very Important) A transformer is required for safe use.

A plug adapter only changes the plug shape and DOES NOT convert voltage. Using this product without a transformer may cause serious and irreversible damage.

■ Buyer Responsibility As this is high-end audio equipment, the buyer is fully responsible for confirming compatibility with their local voltage (100V / 120V / 220–240V) and usage environment before purchase.

■ No Return / No Refund Policy We do NOT accept returns or refunds for: ・Voltage mismatch (including 120V and 220–240V environments) ・Use without a transformer ・Plug incompatibility ・Damage caused by improper setup or usage

■ Liability We are not responsible for any damage, malfunction, or performance issues caused by improper use or incorrect voltage conditions.

■ Final Notice Please ensure full understanding of the above before purchasing. Use only under the correct voltage environment. The L1 Mini is an upgraded version featuring a downsized form factor and a simplified interface. This stereo amplifier has built-in voltage and power amplification circuits to boost the output of virtually any line-level audio source, including TVs, video games, MP3 players, iPods, smartphones, and tablets, by up to 20dB. Featuring a 3.5mm AUX/stereo RCA input and stereo RCA output, it's compatible with most low-volume audio sources, including iPods, iPads, smartphones, TVs, MP3 players, portable CD players, computers, and video games. This boosts the output to the level needed to drive amplifiers and speakers. With its built-in amplification and voltage boosting circuits, the L1 MINI allows you to adjust the gain to suit various audio sources, and it always operates at a high voltage of MAX 26V, providing a high output amplitude of ±12.5V and a high gain of M 20dB. With its wide gain range, broad frequency response, excellent signal-to-reaction ratio, and HiFi sound, it allows you to increase the output level of your audio devices to match other sources or to use longer cable runs than usual. The NE5532P op-amp features a double-sided PCB design and a named socket design, offering convenience for upgrading to other dual op-amps for enhanced playability. High-quality shielded potentiometers ensure a wide frequency range and excellent dynamic response, delivering a smooth, warm, and natural sound with ultra-low distortion. Product Information Parameters - Audio Input: 3.5mm AUX / Stereo RCA - Audio Output: Stereo RCA - Gain: 10x, 20dB (Adjustable) - Frequency Response: 20Hz-20KHz - THD: MAX 0.06% - S/N Ratio: ＞90dB - Input Sensitivity: 150mW at 1KHz / 50KHz - MAX Output Amplitude: ±12.5V - Input Voltage: DC 5V (≧350mA) - DC Plug Size: 5.5*2.5mm - Amplifier Operating Voltage: DC 26V - Dimensions (W*D*H): 65*89*27mm / 2.56*3.50*1.06in - Package Dimensions (W*D*H): 130*80*90mm / 5.12*3.15*3.54in - Net Weight: 141g / 0.31lb - Package weight: 300g / 0.66lb Contents: 1*L1 MINI Stereo Line Level Booster 1*USB to DC Cable