Xin Zhi Zhao Schematic Updated -
Today, we are presenting the —a comprehensive revision that corrects previous errors, modernizes the power supply, and optimizes the driver stage for 21st-century preamp compatibility.
| Metric | Old Schematic (2005) | Updated Schematic (2024) | | :--- | :--- | :--- | | | 7.2 Watts | 8.9 Watts | | Frequency Response (20Hz–20kHz) | -3.5dB (20Hz) | -0.8dB (20Hz) | | Signal-to-Noise Ratio | 82dB (A-wtd) | 94dB (A-wtd) | | Output Impedance | 3.2 Ohms | 1.9 Ohms | xin zhi zhao schematic updated
Whether you are a seasoned engineer or a bold beginner, use this V4.2 guide. Your ears (and your speakers) will thank you. Have you built the updated Xin Zhi Zhao? Share your build photos and measured voltages in the comments below. For more technical deep dives, subscribe to our newsletter for weekly amplifier schematic analyses. Today, we are presenting the —a comprehensive revision
The Xin Zhi Zhao is a amplifier typically utilizing the 300B vacuum tube. It earned its nickname, "The Little Chinese 300B," not because of its size, but because of its ability to produce "western" 300B sound quality at a fraction of the cost. Have you built the updated Xin Zhi Zhao
If you are looking to build, repair, or modify this legendary single-ended triode (SET) amplifier, this is your definitive blueprint. Before diving into the updated schematic, we must understand the original design philosophy.
In the world of high-fidelity tube audio, few names evoke as much curiosity, controversy, and respect as the (often abbreviated as XZZ or Xin Zhao). For nearly two decades, this obscure yet powerful amplifier design has been a darling of the DIY community. However, until recently, the schematics available online were fragmented, often erroneous, or based on early prototype models.
