GZLOZONE X-B1 HiFi Buffer Preamplifier

Based on the Classic B1 Buffer Circuit Design 🎧

Choosing your option: DIY Kit includes all components for you to solder and test yourself (no potentiometer). Finished Board is fully assembled and factory tested, ready to install (no potentiometer included on either option).

Key Features

Premium Components

Uses matched 2SK170 JFETs (Malaysia-made) paired with IRFP240+IRFP9240 output devices for a smooth, detailed sound.

LED Constant Current Correction

Stabilized bias via LED voltage constant current correction for a clean, musical signal path.

Two Build Options

Choose a DIY Kit for hands-on soldering, or a Finished Board that's pre-assembled and tested.

Compact PCB

Measures 190mm x 83mm, making it easy to fit into most DIY audio enclosures.

Specifications

Brand	GZLOZONE
Model	X-B1
Circuit Reference	B1 Buffer Preamplifier Topology
PCB Size	190mm x 83mm
Key Transistors	2SK170 (Malaysia), IRFP240, IRFP9240
Bias Method	LED Constant Current Correction
Potentiometer	Not Included
Origin	Mainland China

Product Images

Frequently Asked Questions

Does this include a potentiometer?

No, neither the DIY Kit nor the Finished Board includes a potentiometer.

What's the difference between DIY Kit and Finished Board?

The DIY Kit requires you to solder and test all components yourself. The Finished Board arrives fully assembled and tested, ready for installation.

What skill level is needed for the DIY Kit?

Intermediate soldering experience is recommended, as this is a buffer preamplifier circuit with multiple discrete components.