Douk Audio Passive Preamplifier Volume Controller HiFi Preamplifier High-Precision (HiFi Version, Black)

【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. Many audio sources, such as HIFI PC sound cards, DACs, and CD players, can output high-level signals. Additionally, some active speakers and pure power amplifiers have high gain, so they don't necessarily need to be matched with an active preamplifier to amplify the signal. Passive preamplifiers, lacking power transistors, are ideal for minimizing sound rendering. There is no gain; for example, when the input is 1V, the output remains 1V. It can be used with power amplifiers, active speakers, etc. High-precision adjustment is possible thanks to the use of Japan ALPS27/16 potentiometers. By employing pure copper gold-plated RCA connectors, lossless transmission is achieved. Many audio sources, such as HIFI PC sound cards, DACs, and CD players, can output high-level signals. Additionally, some active speakers and pure power amplifiers have high gain, so they don't necessarily need to be matched with an active preamplifier to amplify the signal. Passive preamplifiers, lacking power transistors, are ideal for minimizing sound rendering. The Douk Audio Passive Preamp comes in two versions and three colors: Standard version: ALPS16 potentiometer, pure copper gold-plated RCA connectors are used. HiFi version: Uses ALPS27 potentiometer and CMC816 RCA connector. Features There is no gain; for example, when the input is 1V, the output remains 1V. It can be used with power amplifiers, active speakers, etc. High-precision adjustment is possible thanks to the use of Japan ALPS27/16 potentiometers. By employing pure copper gold-plated RCA connectors, lossless transmission is achieved. parameter Colors: Gold/Black/Silver Input impedance: 50K Dimensions (W * H * D): 64mm * 42mm * 98mm Weight: 255g packing list 1 x Passive Preamplifier