New Old Stock Brimar CV4004 from the early sixties in original red/black/orange boxes.

• Low microphonics
• Smooth midrange, sweet as Telefunken
• Box plates
• Classic British sounding valve (tube) refined and well balanced
• Brimar factory code 3L1 / 3977
• Available in matched pairs
  

This is early 1960´s short gray plates RCA 7025 tubes in original RCA old styled boxes. Considered as the best 7025 tube ever made and it´s a must in vintage guitar amps.

• Very dynamic with low noise and low microphonics
• Dynamic with a tight bottom and clear, varm top-end
• Hard to find in mint condition so grab it while you can

Only small stock, less then ten.

Early 1960´s gray plates tube with large O halo and copper grid posts, yellow printing, in original boxes.

The 7025 designation indicates low noise and hum.

More than 10 pieces in stock.

This special quality, low noise dual triod (ECC83 with different pinout and 6,3 v filament) was widely used in many models of German made, high quality amplifiers, like Klemt Echolette, Sennheiser, Klein & Hummel, Saba Telewatt, Dual, and others.

Good stock of this special quality tube.

We have a good stock of 5751 tubes. Tubes with black or grey plates, with double or triple mica, from mid fifties to early seventies.

Excellent 12AX7/ECC83 replacement in line stage or input of output amplifier when a small amout of gain reduction is wanted.

(5751 has an amplification factor of 70 compared to an amplification factor of 100 for 12AX7/ECC83)