Tubes Asylum Questions about tubes and gear that glows. FAQ

---

[ Follow Ups ] [ Post Followup ] Thread: [ Display  All  Email ] [ Tubes Asylum ]

---

[ Alert Moderator ]

---

RE: Question about tube amplifiers

Posted by 6bq5 (A) on July 17, 2023 at 11:09:02

In Reply to: Question about tube amplifiers posted by jedrider on July 16, 2023 at 07:34:41:

I would echo what has been said - the delta between an EL-34 and a KT150 is Significant-
Filament amperage: KT150 is noted at 2.0amps maximum and 1.75amps minimum. An EL34 is 1.5A - one will be underpowered, or have a shortened life...

Typically an EL-34 is run w/ ~400-450 volts at ~120mA on the anode/plate - the KT-150 is more like 800+V at 150-180mA

6550/KT-88 into the KT 120/150... are more compatible in a given amp
THe EL-34 was designed as a lower output tube - for a slightly different application...

I will also readily admit that the KT 90, 120, 150 are not my cup of tea.
esp the KT-90....


Happy Listening

This post is made possible by the generous support of people like you and our sponsors:

Kimber Kable

---

[ Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2025, Audio Asylum, all rights reserved ]

---

[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]

---