Jolida JD 303
Overview
With a remarkable combination of top-tier performance, innovative design, and exceptional features, the Jolida JD303 integrated stereo amplifier stands out as a truly exceptional device for Hi-Fi enthusiasts. A supercharged successor to the Jolida JD202S, the JD303 delivers an impressive power output of 2x50 W, fueled by a robust power supply section. It utilizes EL34 tubes for amplification, paired with 12AX7 triodes for preamplification and 12AT7 tubes for voltage regulation.
In terms of design, the JD303 seamlessly blends tradition and modernity with undeniable success. Its connectivity is classic, featuring four gold-plated RCA stereo inputs, a line output, and two sets of speaker terminals for 4 or 8 ohm speakers. However, the JD303 also incorporates innovative technology called Easy Bias, which allows for tool-free adjustment of tube bias. This function is facilitated by an LED located next to each tube, indicating proper or improper bias. A potentiometer enables quick adjustment to restore optimal performance.
The Jolida JD303 amplifier boasts a total harmonic distortion of less than 0.3%, a signal-to-noise ratio exceeding 88 dB, and a frequency response of 15 Hz to 75 kHz (+- 1 dB). These figures, combined with the quality of its components and the robustness of its power supply, ensure top-notch performance and exceptional analytical capability. Moreover, the JD303 is perfectly suited to drive the most demanding speakers, effortlessly extracting the quintessence of their sonic potential.
In terms of durability, the amplifier comes with a three-month warranty for the integrated tubes, attesting to Jolida’s confidence in the quality of their products. Additionally, it has been mentioned that the JD303 has been modified by StaCCato v1.5 with Absolue Creation UL-Tim internal wiring, adding an extra touch of quality and performance to this impressive amplifier.
In summary, the Jolida JD303 is an amplifier that makes no compromises in terms of sound quality, performance, and design. It is a perfect choice for audiophiles seeking to upgrade their Hi-Fi system with a device that offers both innovative technology and exceptional sound quality.
- Power and Sound Quality: The Jolida JD303 delivers an impressive power of 2x50 W, capable of providing a rich and detailed sound. It uses EL34 tubes for amplification, 12AX7 triodes for preamplification, and 12AT7 tubes for voltage regulation, all contributing to its superb sound quality.
- Easy Bias Technology: The JD303 incorporates an innovative technology called Easy Bias, which allows for adjusting the tube bias without tools. This feature facilitates optimizing the device’s sound performance, ensuring consistent and reliable performance.
- Build Quality and Design: The JD303 combines tradition and modernity in its design. It features classic connectivity, with four gold-plated stereo RCA inputs, a line output, and two sets of speaker terminals for 4 or 8 ohms, all housed in a robust and elegant chassis.
- Performance: The JD303 offers a total harmonic distortion of less than 0.3%, a signal-to-noise ratio greater than 88 dB, and a frequency response of 15 Hz to 75 kHz (+- 1 dB). These figures attest to its top-notch performance and exceptional analytical capability.
- Adaptability: The JD303 is perfectly suited to power the most demanding speakers, effortlessly extracting the quintessence of their sonic potential. Whether you have large floorstanding speakers or bookshelf speakers, the JD303 is capable of making them shine.
Technical Specifications
Amplification
- Power: 2 × 50 W (at 8 and 4 ohms)
- Automatic biasing system (Easy Bias)
- Tubes:
- 2 × 12AX7 tubes and 2 × 12AT7 tubes
- 4 × push-pull EL34 triode assemblies
Performance
- Total harmonic distortion: < 0.3%
- Signal-to-noise ratio: > 88 dB
- Input impedance: 100 kΩ
- Input sensitivity: 300 mV
- Frequency response: 15 Hz to 75 kHz (± 1 dB)
Connectivity
- 4 × gold-plated RCA line inputs
- 1 × control line output
- 2 × pairs of binding posts for 4 or 8 Ω speakers
Physical Characteristics
- Dimensions (W × H × D): 430 × 200 × 340 mm
- Weight: 23 kg
- Detachable power cord
- Remote control
- Eco-contribution included in the sale price.

