Headphone Vacuum Tube Includes 5725 Vacuum Tube FX-AUDIO- TUBE-07J [Black] High-Power Amplifier, 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. AC adapter required (sold separately). DC 12V/2A or higher. DC jack 5.5mm x 2.1mm (center positive). 5725 Vacuum Tube Preamplifier & High-Power Headphone Amplifier Gain switching function Dual input switching function High-quality components are carefully selected for the audio signal lines. A fusion of a 5725 vacuum tube preamplifier and a high-power headphone amplifier! This is a vacuum tube preamplifier (line amplifier) product equipped with two analog RCA inputs and a high-power headphone amplifier using power transistors. The vacuum tubes used are the "5725" tubes, which offer excellent sound quality and cost performance. The pleasant sound, enhanced with harmonics from the vacuum tube section, is powerfully driven by a Class AB headphone amplifier circuit composed of power transistors. It powerfully drives even high-impedance headphones. Experience the powerful driving force that unlocks the full potential of your headphones, and the soothing, soul-stirring sound enhanced by the harmonic content added by vacuum tubes. As it's a preamplifier, it can be added to your existing stereo system. For example, by connecting it between your TV or CD player and your amplifier, the characteristics of vacuum tubes are added, resulting in a more pleasant sound. Furthermore, it can also be used as a high-quality, high-power headphone amplifier, providing ample driving power for high-impedance headphones up to 600Ω. [Notes] *The product warranty period is 6 months from the date of purchase. *This product does not include a power supply. An AC adapter is required for use. *This product is a preamplifier. A separate power amplifier is required to connect to passive speakers that do not have a built-in amplifier. *Compatible vacuum tubes are 5725 (2 included), 6J1, and 6K4. Do not connect any other vacuum tubes. *Please do not use the included 5725 vacuum tube in the preamp stage of the TUBE-P01J. The TUBE-P01J is designed exclusively for the 6J1, and connecting any other vacuum tube will cause damage. *Please note that the headphone output terminal does not support 4-pole plugs (TRRS). *The pre-out and headphone output terminals are mutually exclusive. (Pre-out output will be disabled when headphones are connected.) *The 3.5mm/6.3mm headphone output jacks are mutually exclusive. (The jack connected later will take priority.) [Recommended power supply] AC adapter required (sold separately) ▼Recommended AC adapter https://www.amazon.co.jp/dp/B01M4JK604 [Product Specifications] Brand: FX-AUDIO- Product model number: TUBE-07J Color: Black Compatible vacuum tubes: 5725 (2 included) / 6J1 / 6K4 Product warranty period: 6 months from the date of purchase Input terminals: [2 systems] Stereo RCA terminals Output terminal: Stereo RCA terminal (output stops when headphones are connected) Headphone output terminals: [2 systems] 3.5mm stereo mini jack / 6.3mm standard headphone jack (exclusive use) Line amplifier section: 5725 vacuum tube Buffer circuit op-amp: Texas Instruments NE5532 op-amp Headphone amplifier preamplifier op-amp: Texas Instruments NE5532 op-amp Headphone amplifier current amplification section: Power transistor Class AB circuit Headphone impedance range: 16Ω to 600Ω Maximum headphone output: 850mW (@32Ω) / 65mW (@600Ω) Functions: 2-input switching / GAIN switching Power supply: DC12V / Power capacity 2A or higher (AC adapter sold separately) Power connector: DC jack, outer diameter 5.5mm x inner diameter 2.1mm (center positive) Accessories: 2 x 5725 vacuum tubes, instruction manual Dimensions: 133mm (width) x 140mm (depth) x 33mm (height) (excluding protrusions) Weight: 450g