PRT07A 12AX7 Vacuum Tube Preamplifier PCB Kit - M7 Circuit, No Tube Included

About This Product

Audiophiles and DIY electronics folks, this PRT07A tube preamp kit is for when you want that warm, classic tube sound without paying boutique prices.

This is the circuit board and components only - you'll need to supply your own 12AX7 tubes and do the soldering work yourself.

The M7 circuit design is legendary among tube enthusiasts for its smooth, musical character that just makes music sound more alive.

The PCB measures 77x154x1.6mm and is double-sided with spray tin finish for good solderability.

You'll need to provide the power supply - it requires DC-280V in two groups (each at least 10MA) and DC12.6V for the tube filaments (at least 0.8A).

If you're comfortable with electronics assembly and understand tube safety precautions, this kit lets you build a seriously high-quality preamp for a fraction of the cost of pre-built units.

The 12AX7 tube is super common and has lots of upgrade options from various manufacturers, so you can really tune the sound to your preference.

The board is well-designed with clear markings, making assembly pretty straightforward if you have basic soldering skills.

Once built, you'll have a preamp that rivals units costing several times more.

The tube sound adds that harmonic richness and warmth that solid-state gear just can't replicate.

Whether you're building it for your main hi-fi system, a recording studio, or just as a fun electronics project, this kit delivers authentic tube performance.

Just remember - tube circuits involve high voltages, so make sure you know what you're doing safety-wise before diving in.

For the price, you're getting access to that magical tube sound that makes listening to music such a rich experience.

Product Information