Tube Amplifier Kit, DIY Tube Preamp Kit, Tube Preamp, DIY Amplifier Kit, 6j1 Vacuum Electron Tube Valve Preamp Tube Amplifie Board Headphone Amp Parts Musical Fidelity Kit DIY Electronic Kits

Price: $17.69
(as of Dec 15,2025 08:10:00 UTC – Details)

Features:

– Connects the 6J1 tube pre-amp between sound source and amplifier
– Eight 470UF capacitor filter for clean power system with no hum
– High frequency and low proof filtering for excellent power system
– DIY kit for assembling your own tube amplifier
– Uses DC 5.5*2.1 socket and AC 12V transformer

Pros:

– Filters out digital flavor for better music and voice quality
– Clean filtering with no noise
– Easy to assemble with parts provided
– Can use either DC or AC transformer for power

Cons:

– Requires soldering of power cord to circuit board
– Filament needs to be connected in series for noise reduction