Version Description:
Version1: Non-Bluetooth Standard Version Kit
Version2: Non-Bluetooth Standard Version Finished Product
Version3: With 5.0 Bluetooth Version Kit
Version4: With 5.0 Bluetooth Version Finished Product
Version5: Retro Premium Version with Meter, Non-Bluetooth Kit
Version6: Retro Premium Version with Meter, Built-in Bluetooth Kit
Version7: Retro Version with Meter, Non-Bluetooth Finished Product
Version8: Retro Version with Meter, Built-in Bluetooth Finished Product
Version9: Square Meter Version with Meter, Non-Bluetooth Kit
Version10: Square Meter Version with Meter, Non-Bluetooth Finished Product
Version11: Square Meter Version with Meter, Built-in Bluetooth Kit
Version12: Square Meter Version with Meter, Built-in Bluetooth Finished Product
Heavyweight Release: Spartan F1 (6J8P+FU50+5U4G) Tube Amplifier Kit/Finished Product
In response to the strong demand from audiophiles, we are proud to introduce this high-power, high-thrust single-ended tube amplifier to satisfy friends who prefer high-power tube amps. This amplifier inherits the advantages of pure tube single-ended designs, delivering a warm, mellow, and captivating sound that lingers beautifully.
Starting today, the rectifier tube in this amplifier has been fully upgraded from the 5U4C to the gourd-shaped 5U4G. The output transformers have also been upgraded to a 6645 core size. Separate photos will not be taken for these upgrades; this notice serves as official information.
Please note: The front panel of the Retro Version is made of solid wood. Color and grain patterns may vary.
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Specifications:
Power Transformer: 9660, 185W ultra-large power transformer, new special-grade core * 1
Output Transformer: 6645, HiFi 3+2 winding method, new old-stock imported 0.35mm Z11 cores * 2
Choke Coil: 5725, 4H, new special-grade core * 1
Tubes: 6J8P2 / FU502 / 5U4G-PLUS1
Output Power: 8W+8W
Frequency Response: 20Hz - 20kHz
Output Impedance: 4 Ohm and 8 Ohm
Signal-to-Noise Ratio: 90dB
Input Sensitivity: 500mV - 1000mV
Input Impedance: 100kΩ
Harmonic Distortion: 1% (1kHz)
Dimensions: 320mm (L) * 210mm (D) * 160mm (H)
Weight: Net weight approximately 9KG
Product Display:
Friendly Reminders:
1. Due to the special nature of kits, components cannot be returned or exchanged once soldered. Please check all parts immediately upon receipt. Contact customer service within 48 hours for any missing or incorrectly shipped items. DIY tube amplifier assembly requires a certain level of foundational knowledge. We provide schematics, photos, and comprehensive technical support. If you feel DIY might be challenging, please consider purchasing our finished product.
2. Our products are DIY kits; achieving absolute perfection is very difficult. If you have any opinions or suggestions, please contact customer service, and we will strive to resolve them.
3. We carefully pack every tube amplifier. Upon receiving your package, please inspect the packaging thoroughly first. If damaged, refuse delivery and contact us immediately. Otherwise, we may not be able to assist.
4. This tube amplifier does not include a power cord or audio cables.
5. The tube amplifier MUST be connected to speakers before powering on. As the output transformer requires a load, powering on without speakers can easily damage the output transformer.
6. Placing an order indicates your agreement to the above terms and conditions.
