Dual Function of MM Phono & Line Input: Comfortably Amplify Records and Various Audio Sources with a Single Unit: This P7 combines the functions of an MM (Moving Magnet) phono equalizer and a vacuum tube preamplifier with a standard line input (RCA). You can enjoy the rich sound of records by connecting a turntable, and you can also connect line output audio sources such as CD players, smartphones, and TVs, adding the warmth and depth unique to vacuum tubes. Input switching is easily done with the front switch, making it a versatile centerpiece for various audio systems.
Uses Genuine New PSVANE ECC83S Vacuum Tubes: Replaceable Design for Peace of Mind in Future Sound Exploration: At the heart of the sound are two new ECC83 (equivalent to 12AX7) vacuum tubes from PSVANE, a high-end vacuum tube manufacturer in China. These are not stock items, but highly reliable new vacuum tubes that are still in production. Designed to allow for replacement with other compatible vacuum tubes such as the Shuguang 12AX7B or 7025, this unit easily accommodates future tube aging and upgrades for further sound quality enhancement. You won't have to worry about running out of old tubes, ensuring long-term, worry-free use.
XLR Balanced Output & High-Pass Filter (HPF): High-Quality Connection and Reduced Low-Frequency Noise During Record Playback: Equipped with XLR output terminals, it connects to compatible power amplifiers and active speakers for noise-resistant, wide-dynamic-range, and clear audio transmission. It also features a built-in high-pass filter (HPF)* specifically for phono input. This effectively cuts out ultra-low frequency bands below 20Hz (subsonic noise)* originating from record groove distortion and player vibrations, reducing unwanted speaker vibrations and distortion. As a result, the sound image becomes clearer, and a more refined playback experience is achieved, particularly in the mid-high frequencies, resulting in improved clarity and a wider soundstage.
Treble/Bass Adjustment & Bypass Mode: Fine-tune your sound or reproduce the original sound with ease: The front panel features knobs that allow you to adjust the treble and bass within a range of ±6dB. Enjoy fine-tuning the sound to match the characteristics of your speakers, your preferred music genre, and your listening environment. Alternatively, if you want to pass through a pure signal without any sound correction, you can select bypass mode. In this mode, the tone control circuit is completely bypassed, faithfully reproducing the nuances of the tube amplifier and the original signal's character. Its flexibility to accommodate diverse listening styles is a key feature.
Replaceable Op-Amp & Reliable Power Supply Design: Enjoy further customization and ensure stable operation: The unit employs three NE5532 op-amps (socket-type) internally, allowing you to replace them with other dual op-amps such as the OPA2604 or MUSES02. Since the sound character changes depending on the op-amp's characteristics, this expands the enjoyment of fine-tuning the sound quality. Furthermore, while the operating voltage is a simple DC12V/2A or higher, it features a robust power supply design that prioritizes sound quality, including the internal generation of high voltage (180V) to optimize the operating point of the vacuum tubes. This unit packs a wealth of carefully considered features into a compact chassis.
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