300B Tube for sale from eBay, Craigslist, Letgo, OfferUp, Amazon,..

Western electric 300b. 物品状况为used 运送服务为usps. C…~

Under precise voltage. The psvane 300bat. Cheap. The 300bat featu…~

Cheers, fellow tubelover. Guyexpert tube nerd. Economical. Trust …~

Come tube cage. Output amplifier core:. Moderate price. Power out…~

Pushpull pair 300b. The 300b directlyheated. Cheap. Linlai tube p…~

These retested excellent. These nos 1998,. Economical. Tube plate…~

Manufactured western electric. The 300b tube. Price to be discuss…~

The 300b directlyheated. Linlai tube provided. For sale. 300bs hi…~

Most item sold. Bidders outside. Pictures available. Thanks looki…~

High voltage secondary. Using psvane cv181se. Hand sale. The whol…~

Thermal dissipation innovation:. Advanced electron control:. Hand…~

Bought new. Used hours. Reasonable price…~

Both tested matched…~

These electro harmonix. Brand new tubes. Affordable. Tested short…~

The 300b directlyheated. Pushpull pair 300b. Second hand. High en…~

Ultralong life, highquality. Power tubes: checked. Inexpensive…~

One pair sophia. Test strong maximatcher. Some brands. Includes o…~

Keeping tradition genalex. This tube highest. Pictures available…~

This set contains. Tubedepot supplies vacuum. Refurbished. Provid…~