New Customer 5% OFF Code: TUBE5
PVPSVANE Tube Store
Cart
PSVANE Treasure 300B-Z matched pair main product image

PSVANE Treasure 300B-Z Power Tube Matched Pair

Direct-heated 300B triode pair for SET and compatible push-pull amplifiers

$226.00
In Stock
Tube Type:300B
Brand:PSVANE
Format:Matched Pair (2 pcs)

Screened before shipping - Secure packaging - Global shipping

Shop 300B tubesBuying guideCheck fit

Description

The PSVANE Treasure 300B-Z is a direct-heated triode pair for compatible 300B amplifiers. PSVANE lists 5 V / 1.2 A filament operation, 480 V maximum anode voltage, and 40 W maximum anode dissipation.

Treasure 300B-Z replacement notes

  • PSVANE Treasure 300B-Z is a direct-heated 300B power tube matched pair for compatible 300B single-ended and push-pull amplifiers.
  • Use it where the amplifier manual calls for 300B output tubes and the amplifier has the correct operating conditions.
  • 300B should not be treated as interchangeable with 2A3, 45, 845, or other direct-heated triodes without explicit circuit support.

Before ordering Treasure 300B-Z

  • Choose a matched pair for stereo 300B SET amplifiers or any pair of 300B positions that work together.
  • Confirm whether your amplifier needs one pair, two pairs, or a different set quantity before checkout.
  • Check bias and installation guidance in the amplifier manual because 300B amplifiers can expose high voltage.

Compatibility

Use only in amplifiers designed for 300B output tubes. Confirm bias mode, plate voltage, filament supply, and matched-pair requirements before replacing output tubes.

Sound Signature

Warm, detailed, and dimensional with the saturated midrange and spacious presentation associated with premium 300B triode amplifiers.

Testing & Matching

Sold as a 2-piece matched pair under PSVANE Treasure-series matched-pair service.

Shipping & Warranty

Shipping

Ships within 1-2 business days. International shipping available.

View shipping policy ->

Warranty

90-day warranty against manufacturing defects. DOA coverage included.

View warranty policy ->

Buying questions

What does PSVANE Treasure 300B-Z replace?

PSVANE Treasure 300B-Z replaces 300B output tube positions in compatible 300B amplifiers.

Is Treasure 300B-Z sold as a matched pair?

Yes. PSVANE Treasure 300B-Z is listed as a matched pair for compatible stereo or paired 300B output positions.

Can 300B replace 2A3?

No. 300B should not replace 2A3 unless the amplifier is specifically designed to support both tubes.

What amplifier type is Treasure 300B-Z for?

PSVANE Treasure 300B-Z is for compatible 300B SET amplifiers and some 300B push-pull designs.

Should I check bias before replacing 300B tubes?

Yes. Follow the amplifier manual and confirm bias or installation requirements before replacing 300B output tubes.