Version Description:
Version 1: Square VU Meter Version - Tube-less Kit (No Vacuum Tubes)
Version 2: Square VU Meter Version - Complete Kit (with Vacuum Tubes)
Version 3: Square VU Meter Version - Complete Kit with Built-in Bluetooth (including Vacuum Tubes)
Flagship Release - Spartan K1 (6N8P/6SN7 + 300B + 274B/5U4G) Tube Amplifier Kit
Major Announcement: Starting today, the black base 274B rectifier tube is being upgraded for free to the Linlai Audiophile Ceramic White Base 274B, resulting in a more coordinated and aesthetically pleasing appearance. New photos will not be taken separately. This is a special notification!
In response to strong demand from audiophiles, we are launching this high-power, high-drive single-ended tube amplifier to satisfy friends who prefer high-power tube amplifiers. This unit inherits the advantages of pure tube single-ended amplifiers, delivering warm, mellow, and captivating sound that lingers.
Starting today, the standard chassis is being upgraded for free to feature knob switches, symmetrical on both sides, making it even more beautiful and aesthetically pleasing. New photos will not be taken separately. This is a special notice.
In terms of sound, the characteristics of the 300B tubes are quite prominent. Reproduction of vocals, violins, light music, etc., is exceptionally sweet, while the sonic foundation maintains a certain thickness. The high frequencies are transparent and detailed. The low frequencies are not exaggerated but have decent power. The 300B has a unique soundstage; some describe it as rich in harmonics. This amplifier sounds as if it has a slight built-in reverb effect, with a relatively large soundstage and good stereo imaging. Regarding driving power, the three frequency ranges connect naturally, and the sound is relaxed. Personally, I feel the 300B has significant tonal coloration, adding a touch of sweetness to everything played, which is very pleasing to the ears. In detail, the high frequencies are excellent, the midrange is prominent, and the low frequencies are good. In summary, it's the top choice for vocals, truly deserving the title 'Tube King 300B'!
Our store focuses on affordable audiophile gear. The tube amplifiers we sell are renowned for their high cost-performance ratio and are favored by many enthusiasts. This unit adopts the industry-recognized classic 6SN7 driving 300B circuit. Practice has proven that this circuit offers sufficient gain, ample drive voltage, low distortion, and superior performance. The components used can be described as sparing no cost: a massive 114x70 power transformer (350W true power, max in its class) and massive 96x45 output transformers (brand new stock Z11 0.35mm cores, wound with 4+3 audiophile method, max in its class)!
Specifications are as follows:
Power Transformer: 11470mm, 350W true power Transformer, brand new special-grade laminations *1 (max among 300B kits)
Output Transformer: 9645mm, 20W, audiophile 4+3 winding method, brand new stock imported Shin Nittetsu 0.35mm Z11 laminations *2 (max among 300B kits)
Choke: 5725mm, 4H, brand new special-grade laminations * 2
Tubes (Standard Configuration): One Shuguang 6N8P / Two Linlai 300B-G / One Linlai 274B
Tubes (High-end Configuration): One Linlai 6SN7 / Two Linlai 300B-G / One Linlai 274B
Output Power: 8W + 8W
Frequency Response: 18Hz - 25kHz
Output Impedance: 4 ohms and 8 ohms
Signal-to-Noise Ratio: 89dB
Input Sensitivity: 500mV - 1000mV
Input Impedance: 100kΩ
Harmonic Distortion: 1% (1kHz)
Dimensions: 370mm (L) * 290mm (D) * 220mm (H)
Weight: Approximately 21KG
Friendly Reminders:
1. Due to the special nature of the kit, components cannot be returned or exchanged once soldered. Upon receipt, please immediately check the goods. Contact customer service within 48 hours for any wrong or missing items. DIY tube amplifier assembly requires a certain level of foundational knowledge. Our store will provide schematics, actual photos, and comprehensive technical support. However, if you feel DIY is somewhat difficult, you can purchase the finished product from our store.
2. Our store sells DIY products. It is challenging to achieve perfection, and extreme perfection is not possible. If you have any opinions or suggestions, please contact customer service. We will strive to resolve them.
3. We will carefully pack each tube amplifier. Upon receiving the goods, please务必 first carefully inspect the packaging. If damaged, refuse acceptance, contact our store promptly, otherwise we will be unable 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 because the tube amplifier's output transformer requires a load. Otherwise, it is极易 easy to burn out the output transformer!
6. Placing an order indicates your agreement to the above terms and conditions.
