What is the 6005 vacuum tube?

The 6005 is a tetrode vacuum tube designed for power applications. Military 6AQ5..

What is a 6005 substitute or equivalent?

Direct equivalents to the 6005 include 6AQ5. These share the same pinout and operating envelope, so they can usually be swapped without circuit changes — though batch-to-batch variations between manufacturers (NOS vs current production) may shift the sonic character noticeably.

What are the key specifications of the 6005?

Transconductance gm ≈ 4.1 mA/V, plate resistance rp ≈ 52.0 kΩ, max plate voltage 275 V, max plate dissipation 11 W, heater 6.3 V / 0.45 A.

Is the 6005 still in production?

Production status varies by year and manufacturer. The current Amperatubes catalog classifies the 6005 as Common availability. NOS (new-old-stock) examples from RCA, Mullard, Tung-Sol, GE, Sylvania and Telefunken trade among collectors; modern production where it exists comes mostly from JJ Electronic, Electro-Harmonix, Tung-Sol (New Sensor), Genalex, and a handful of small-batch makers.

What does the 6005 sound like?

Military 6AQ5.. Sonic character also depends heavily on the circuit operating point, the surrounding tubes in the stage, and the output transformer when present — use the interactive loadline calculator on this page to explore the trade-offs.