This website does not use tracking cookies. We only use technically necessary cookies and anonymised usage statistics (Umami). For more information, please read our Privacy Policy.
183 tubes in deep comparison. Construction, sound character and price in detail.
From €25 to €2,500 — Budget to Reference Class
Important Notice: When using a 274B, always check the first filter capacitor in the power supply — depending on the tube type, it may only be 4 µF to 10 µF. Some types (GZ34, GZ37, 5U4G) are not direct 274B replacements — always verify compatibility with the amplifier manufacturer.
JJ Electronic
Linear, druckvoll, robust – günstigste zuverlässige Option
Svetlana
Russische NOS-Option – solide, warm, sehr günstig
Zuverlässig, wärmer als Standard-5U4G – exzellentes Budget-Upgrade
Günstige Einsteiger-274B mit HPC-T Beschichtung — kompatibel mit 5U4G, 5Z4P, 5Z3P und GZ34.
Ruhiger Hintergrund, romantisch – "Tubey"-Sound für digitale Quellen
National Union
Amerikanische NOS-Perle – warm, organisch, solide
Psvane Cossor 274B — britischer Markenname, Psvane-Fertigung, schwarzer Kolben mit Union-Jack-Verpackung.
Psvanes T-III-Gleichrichter – verbesserte dritte Generation der bewährten T-Serie
Linlais Flaggschiff-274B — Permalloy-Anode, Globe-Kolben, Suspended Core Architecture.
Sehr warm, mächtiger Bass – ideal für helle oder analytische Anlagen
"Black Gate"-Effekt, extrem hohe Auflösung – sehr musikalisch
Sehr luftig, tiefe und weite Bühne – glatte Höhen
Sophia Electric Aqua III — Weiterentwicklung der legendären Aqua II, kompatibel mit 300B-Amps und Lampizator DACs.
Absolute Stille, perfekte Kontrolle – sehr "clean" und präzise
GEC (General Electric Company)
Britische Legende – holografisch, null Körnigkeit, extrem flüssig
Britische Legende – blitzschnell, straffer Bass, hält Jahrzehnte
A.C. Cossor
Britische NOS-Legende – warm, dynamisch, extrem langlebig
Magische Musikalität, höchste Präzision – Referenzklasse der Neuproduktion
Der heilige Gral – unerreichte Mitten, extrem selten

Mesh-Plate Detail
The fine wire mesh of a mesh-plate tube provides maximum transparency and a holographic soundstage.
As the heart of the power supply, the 274B influences dynamics, bass depth and soundstage of the entire amplifier.
Check the first filter capacitor before buying — many WE replicas only tolerate 4 µF.
The 300B is the queen of power tubes. As a directly heated triode, it offers a unique, musical sound character.
Check bias settings and maximum anode voltage of your amplifier before purchasing.

The Art of
Tube Rolling
Swapping tubes is one of the most effective and affordable ways to change the sound of a tube amplifier — no soldering iron, no risk.
All prices listed are non-binding estimates at the time of research and may change at any time. The current price at the respective retailer is always authoritative. No guarantee for availability or deliverability.
Sound descriptions are subjective assessments from specialist publications and user reports. Sound experiences can vary significantly depending on amplifier, speakers and room acoustics. This website does not constitute a purchase recommendation.
The linked retailer pages are purely informational links without any affiliate or commission arrangement. We accept no liability for the content of external pages. All links open in a new tab (rel="noopener noreferrer").