1. Vintage Tubes & Sockets Audio For Sale
  2. sku: 10788045365701861
  3. MULLARD 6BQ5A

MULLARD Nos Iec Power Tube Amplitre 6BQ5A-EL84

6bq5a Mullard 1 Nos Iec El84 Premium Power Tube Nib Condition Tested Amplitre

( Brand: Mullard ), ( Manufacturer Part Number: 6BQ5A ), ( Model: 6BQ5A-EL84 ), ( Type: Power Tubes ), ( Country Of Origin: United Kingdom )

Review MULLARD Nos Iec Premium Power Tube Nib Condition Tested Amplitre

Mullard 6BQ5A NOS IEC EL84 Power Tube - Amplitech Vintage Valve Amp Component

Step back in time with the Mullard 6BQ5A NOS IEC EL84 Power Tube, a timeless piece that embodies the classic sound and reliability of vintage amplifiers. This tube, manufactured by Mullard, a renowned brand in the audio industry, is a New Old Stock (NOS) item, ensuring it's in pristine condition and ready for immediate use.

The 6BQ5A, a close equivalent to the EL84, is a pentode vacuum tube designed for use as a power output device. It's suitable for push-pull and ultra-linear amplifier circuits, making it an excellent choice for guitar amplifiers, hi-fi audio systems, and other audio applications requiring power and clarity.

This tube is an IEC (International Electrotechnical Commission) standard version, which signifies its compliance with international safety and performance standards. The EL84 designation indicates its compatibility with other EL84 tubes, offering versatility in different audio setups.

The Mullard 6BQ5A NOS IEC EL84 Power Tube is a testament to the rich history of tube amplification. Its warm, rich tone, combined with its efficiency and durability, makes it a coveted component for audiophiles and musicians seeking an authentic, vintage sound. Whether you're building a vintage-inspired amplifier or restoring a classic piece, this tube is an essential addition to your component collection.

Experience the difference that the Mullard 6BQ5A NOS IEC EL84 Power Tube can bring to your audio system. Embrace the nostalgia of tube audio technology while enjoying the modern convenience of a New Old Stock item. Order yours today and elevate your audio setup to new heights of sound quality.

Mullard 6BQ5A NOS IEC EL84 Power Tube Analysis

Pros:

1. Authentic Mullard Tube: The Mullard 6BQ5A is a high-quality, authentic Mullard tube, known for its superior sound quality and reliability.

2. New Old Stock (NOS): Being a New Old Stock tube means it has been stored for an extended period and hasn't been used, ensuring it's in pristine condition.

3. IEC Compatibility: The IEC (Industrial Electronic Corporation) version of this tube is a modernized version, making it more durable and suitable for modern equipment.

4. EL84 Substitute: The 6BQ5A is a suitable substitute for the EL84 tube in many amplifier circuits, offering a similar sound character.

Cons:

1. Higher Cost: Authentic Mullard tubes are often more expensive than contemporary alternatives due to their rarity and high demand.

2. Limited Availability: As New Old Stock, the supply of these tubes is limited, and once they're gone, they're gone.

3. Potential Compatibility Issues: While the 6BQ5A is a close substitute for the EL84, there may be minor differences in sound character or performance that could be noticeable in certain applications.

4. Higher Power Consumption: The Mullard 6BQ5A may consume slightly more power compared to some modern EL84 equivalents.

Conclusion:

The Mullard 6BQ5A NOS IEC EL84 power tube is a high-quality, reliable choice for those seeking an authentic Mullard tube for their amplifier. Its superior sound quality, coupled with its IEC compatibility and suitability as an EL84 substitute, make it an attractive option. However, its higher cost and potential limited availability should be considered before making a purchase.

Recommendation:

If you're willing to invest in a high-quality tube and appreciate the sound characteristics of Mullard tubes, the Mullard 6BQ5A NOS IEC EL84 power tube could be a great addition to your amplifier setup. However, if cost or availability is a significant concern, you may want to consider contemporary EL84 alternatives that offer similar performance at a lower price point.

Details:

Your tubes are always securely packed for fast free shipping!, 1 NOS Mullard IEC 6BQ5A EL84 Premium Power Tube Blackburn UK 1967 Excellent NIB Condition. Tested on an Amplitre AT1000.

part #: 6bq5a prices

  • $51.75-$139.50

specifications tubesocketvintagego:

  • brand: Mullard
  • mpn: 6bq5a
  • model: 6bq5a-el84
  • type: Power Tubes
  • country of origin: United Kingdom

payments tubesocketvintagego:

  • credit card: Visa
  • wallet: Paypal
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shipping tubesocketvintagego:

  • cost: $0.00
  • type: Calculated
  • service: USPS Ground Advantage
  • carrier: USPS
  • transit: 4-9 Days
  • class: Standard

returns tubesocketvintagego:

  • method: Money back
  • paid by: Buyer
  • time: 30 Days
  • policy: Returns Accepted

general tubesocketvintagego:

  • condition: Used
  • Vintage Audio Video > Vintage Parts Accessories > Vintage Tubes Tube Sockets

seller tubesocketvintagego:

  • rating: 100.0%
  • # reviews: 808
  • city: Langhorne, Pennsylvania

offer tubesocketvintagego:

  • started: January 24, 2026
  • quantity: 1
  • options: Ship-to-home
  • sold: 0
  • best offers: True
  • availability: In Stock
type: power tubes, country of origin: united kingdom,
category: electronics > vintage audio video > vintage parts accessories > vintage tubes tube sockets, sku: 10788045365701861,
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5 offers $51.75–$139.50 USD
  • New. Offer #1 priced at $51.75 + $0.00 shipping estimate = $51.75* total. We match power tubes within 5% for plate current and 10% for transconductance. The Mullard reissue is a copy of the original, and is a very high quality tube.FREE SHIPPING
  • Open box. Offer #2 priced at $129.00 + $5.97 shipping estimate = $134.97* total. One tube has visible Mullard factory/date code; the second tube s code is too faint to read but tests nearly identical and was matched on our tester. Tube Type: / 6BQ5.+$5.97 shipping
  • Unspecified. Offer #3 priced at $139.50 + $24.45 shipping estimate = $163.95* total. New Sensor Corp., the manufacturer, has taken great pains to get these and all their re-issues correct. These are made with a reference of the NOS MULLARD EL-84.+$24.45 shipping
  • Used. Offer #4 priced at $149.00 + $0.00 shipping estimate = $149.00* total. Tubes test at 10250 and 11000 where pass/fail is 7345 micromhos. RX3 construction.FREE SHIPPING
  • Used. Offer #5 priced at $70.00 + $6.50 shipping estimate = $76.50* total. THE MINIMUM GOOD READING IS 50. THIS SALE IS FOR 2 MULLARD 6BQ5 RADIO VACUUM TUBES MADE IN GREAT BRITAIN.+$6.50 shipping

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