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Audio Output Triodes

DO24 Mullard red white print pair balloon valves MO-V works PX25 PP5/400 equivalent

Mullard DO24 balloon £ 1300 pair

DO25 Mullard balloon triode audio output valves same shape full cup getter black plate quartet tested 100%

Mullard DO25 balloon £ 1600 quartet

DO26 Mullard pair balloon black ribbed plate akin DO24 fully tested and working pair

Mullard DO26 balloon £ 1400 pair

DO30 Mullard red white label balloon valves DA30 V503 power output triodes class A

Mullard Balloon DO30 £ 1200 pair

DO60 Mullard CV1206 equivalent DA60 pair power triode L4 base Top Pip Holy Grail

DO60 Mullard Top Pip L4 base GBP 5,500 pair.

LP4 Ferranti – balloon and ST fat shape – equivalent PX4 AC044 PP3/250 audio triodes

Ferranti LP4 bulbous shape GBP 450 pair.

Ferranti clear glass GBP 220.

Ferranti ST fat shape GBP 180.

MZ05-60 Mullard directly heated triodes L4 base DA60 DO60

Mullard MZ05-60 DA60 DO60 GBP 1,500 pair.

P27/500 Tungsram balloon with special filament arrangement PX25 PP5/400 matched pair

Tungsram P27/500 £ 1100 pair

PA20 Mazda balloon introduced in 1932 2P classic balloon quartet audio valves

Mazda PA20 balloon £ 1400 quartet