6J11P-E / E180F / 6688 Russian Tubes Lot of 10 NEW
E180F / 6688 GOLD PIN Philips
8 PCS. x 6J11P-E ~ 6688 ~ E180F High-frequency Pentode Tubes USSR w/o Boxes | eBay
6688 @ The Valve Museum
6688 / E180F
6688 E180F AMPEREX CV3998 5A/170K CV6189 AUDIO PENTODE VALVE NOS/NIB
6688 / E180F
E180F, MULLARD, NEW BOXED, 5A/170K, 6688, CV3998, EF861 – MULLARD MAGIC
Tubes-Store.com → Other tubes → 6H2P-EV / 6X2P / EAA91 / 6B32 / EB91 tube
6688 Tube for sale | eBay
2 X Russian 6J9P = E180А = 6688 PENTODE tubes. VINTAGE FREE SHIPPING
6688, Tube 6688; Röhre 6688 ID19673, Vacuum Pentode | Radiomuseum.org
SM5CBW - Tubedata
6688 E180F AMPEREX CV3998 5A/170K CV6189 AUDIO PENTODE VALVE NOS/NIB
6688, Tube 6688; Röhre 6688 ID19673, Vacuum Pentode | Radiomuseum.org
6688 5 STAR General Electric
6688 / E180F
E180F / 6688 GOLD PIN Philips
6688/E180F line stage? | diyAudio
Tubes-Store.com → Other tubes → 6J11P-E / E180F / 6688 tube
E180F, MULLARD, NEW BOXED, 5A/170K, 6688, CV3998, EF861 – MULLARD MAGIC
6688 / E180F
6688 @ The Valve Museum
