Nobsound P5 HIFI Vacuum Tube Headphone Dual Mono 200V High Voltage Replaceable Vacuum Low for Audiophiles Amplifier Design, 4.4mm & 6.35mm Output,

【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. 1. Rich and warm sound from a full-fledged vacuum tube circuit driven by 200V high voltage: The P5 employs a full-fledged circuit that drives vacuum tubes (6A2) with a high voltage of 200V, rather than the typical low-voltage specifications. This fully brings out the rich even-order harmonic distortion (harmonics) unique to vacuum tubes, adding warmth, depth, and analog-like emotion to digital sound sources. In particular, vocals and string instruments are reproduced vividly, providing a relaxed listening experience that doesn't cause fatigue even after listening for a long time. 2. Dual-mono (fully dual-mono) structure for highly separated, three-dimensional sound: The "dual-mono" design features independent power supplies, vacuum tube amplification stages, and operational amplifiers for each of the left and right channels. This minimizes "crosstalk," where the left and right signals interfere with each other, achieving exceptional stereo separation. Instrument localization is clear, the soundstage width and three-dimensionality are dramatically improved, and an immersive soundstage, like being in a concert hall, is created. 3. 4.4mm & 6.35mm Outputs and Impedance Switching for Compatibility with All Headphones: Equipped with both a 4.4mm output, which is considered advantageous for high-quality sound reproduction, and a standard 6.35mm output. A switch on the back allows you to easily switch the gain (5dB/15dB) to optimize headphones with a wide range of impedances from 16Ω to 600Ω. Unleash the true potential of everything from highly sensitive earphones to high-impedance headphones such as the HD600 series, which are difficult to drive. 4. Customizable Op-amp & Vacuum Tube Replacement Function Without Soldering: The vacuum tube (standard: 6A2) and op-amp (standard: NE5532), which are the core of the sound quality, can both be easily replaced using a plug-in (insert type) design. No knowledge or skills in soldering are required, allowing you to easily experience the joy of pursuing your preferred sound. By replacing the vacuum tube with a 5654 (simple modification required) or the op-amp with a MUSE01S, you can tune the sound characteristics to your liking. 5. A luxurious dual design and visible beauty to enhance your desk: Choose from two types of casings: classic and warm "walnut wood" and modern and cool "aluminum". It has a built-in LED mood light that changes to 6 colors to highlight the orange glow of the vacuum tube. The preheating time (10-30 seconds) can also be adjusted to extend the life of the electron tube, making it a desktop accessory that combines functionality and aesthetic appeal. Tags: Amplifier, Tube amplifier, Tube amplifier kit, Phono equalizer, Integrated amplifier, 5.1ch amplifier, Small amplifier, Tube preamplifier, Tube radio