ELEKIT TU-8900VK – 300B/2A3 Tube Amplifier DIY Kit - Jj electronic 300b set, Amorphous, With assembly

Directly heated triodes such as the 300B and 2A3 have remained popular with audiophiles for a reason. The 300B brings a rich midrange and deep bass, while the 2A3 offers a delicate, gentle character - either way, this amplifier delivers a genuinely special listening experience.

Technical specification:
- CIRCUIT CONFIGURATION: Single ended tube amplifier
- TUBES, SEPARATELY ORDERED: 300B x 2 or 2A3 x 2, 12AU7 (ECC82) x 2 or 12BH7A x 2
- RATED OUTPUT: 8W + 8W (300B) / 3,5W + 3,5W (2A3) (THD 10%)
- RATED INPUT: 1 VRMS (300B) / 650 mVRMS (2A3)
- RESIDUAL NOISE: 15 µV (IHF-A)
- FREQUENCY RESPONSE: 7 Hz – 90 kHz (with NFB) / 12 Hz – 45 kHz (Without NFB)
- INPUT IMPEDANCE: 50 kΩ
- OUTPUT IMPEDANCE: 4 Ω – 6,3 Ω / 8 Ω – 16 Ω, Selectable by the rear switch
- INPUT TERMINAL: LINE x 1
- OUTPUT TERMINAL: Speaker terminal gold-plated screw (banana plug usable), headphone terminal 6,3 mm jack
- POWER VOLTAGE: AC 110-120 / 220-240 V 50/60 Hz (3P inlet)
- POWER CONSUMPTION: 90 W
- DIMENSIONS: W 365 x H 214 x D 320 mm
- WEIGHT: Approx. 11,4 kg (excl. power cord)

ELEKIT's tube and hybrid amplifier kits are aimed at people who want to understand and build the heart of their audio system with their own hands, not just buy it ready-made. The Japanese manufacturer provides a detailed, step-by-step assembly manual and a pre-etched, labelled PCB with every kit, so it can be assembled safely without any electronics background - most models only need a screwdriver and pliers, no soldering required. The finished amplifier's power, distortion and noise figures are documented by measurement, so you know exactly what to expect at the listening position. ELEKIT and its related accessory/upgrade kits (upgrade transformers, enclosures, replacement pots and knobs) form a modular system: a base amplifier kit can keep being improved years after purchase - for example with a better output transformer, a precision volume pot, or premium enclosure parts - without replacing the whole unit. This results in a system that keeps its value and can be expanded over time. Smaller accessories - enclosure parts, knobs, feet, pot replacements - typically bolt straight onto an amplifier you already own with nothing more than a screwdriver, so the look and feel of an older ELEKIT build can be refreshed without touching the internal circuitry at all.

ELEKIT's Japanese DIY audio kits have been known for decades for their precise manufacturing and well-documented, clearly explained assembly instructions - most models can be built in a few hours without soldering.

Package weight: approx. 19,1 kg.