MULLARD LN152 Tube Philips ECL80 6AB8

( Brand: Mullard ), ( Manufacturer Part Number: LN152 ), ( Model: ECL80 LN152 63TP 6AB8 ), ( Type: Vacuum Tube ), ( Country Of Origin: United Kingdom )

Review MULLARD Lot Of Tube And Philips Tested Good

The **Mullard LN152 (Philips ECL80/6AB8)** is a rare and highly sought-after miniature vacuum tube, renowned for its exceptional performance in high-fidelity audio amplification and vacuum tube preamplification circuits. Originally manufactured by Mullard (a subsidiary of Philips) in the mid-20th century, this **pentode tube** belongs to the **ECL80 series**, a lineage celebrated for its clarity, low noise, and superior transient response qualities that make it a favorite among audiophiles and tube enthusiasts. Physically, the LN152 features a **9-pin octal base**, a compact yet robust construction typical of early electronic components, with a glass envelope that houses a carefully engineered internal structure designed to minimize distortion while maximizing gain.

At its core, the LN152 excels as a **preamplifier or driver tube**, offering an impressive **gain of approximately 100** while maintaining a **low noise figure**, making it ideal for applications where signal integrity is paramount. Its **pentode configuration** ensures efficient amplification with minimal crossover distortion, a critical factor in preserving the dynamic range of audio signals. The tube s **high transconductance** (around 4,000 5,000 mhos) allows it to handle subtle nuances in music with remarkable precision, while its **low plate resistance** contributes to a smooth, extended frequency response ideal for both vintage and modern tube amplifiers.

Beyond audio applications, the LN152 has found niche uses in **radio receivers, oscillators, and even early computer circuitry**, thanks to its reliability and consistent performance under varying conditions. Unlike some of its contemporaries, the LN152 is known for its **longevity**, often lasting thousands of hours when properly cared for, though like all vacuum tubes, it benefits from occasional replacement of its internal filament (if wired for direct-heated operation) or the use of a high-quality replacement bulb. Its **direct-heated cathode** design also reduces the need for external filament transformers, simplifying circuit integration.

For collectors and restorers, the Mullard LN152 holds a special place due to its **historical significance** it was a staple in mid-century electronics, appearing in everything from high-end stereo equipment to military-grade communication devices. While production has long ceased, original specimens and high-quality reissues remain available, often commanding premium prices in the secondary market. Whether used in a **vintage Fender Twin Reverb, a custom tube amplifier, or a restored vintage radio**, the LN152 delivers a warmth and clarity that few tubes can match, embodying the golden age of analog electronics with unparalleled elegance.

### **Pros and Cons of Buying a Mullard LN152 (Philips ECL80/6AB8) Tube**

1. **High Performance in Amplification** The LN152 is a high-quality pentode tube known for its excellent amplification characteristics, making it ideal for audio amplification, preamplifiers, and power amplifiers. It delivers strong gain and low distortion, which is desirable in high-end audio applications.

2. **Widely Used in Classic and Modern Circuits** This tube has been a staple in many amplifier designs, including those from brands like Philips, Mullard, and others. Its compatibility with various schematics makes it a versatile choice for DIY enthusiasts and restorers.

3. **Long Lifespan with Proper Care** When used correctly (with appropriate filament voltage, load line, and dissipation), the LN152 can last for thousands of hours, making it a cost-effective component for long-term use.

4. **Available in New and Replacement Forms** While original Mullard tubes are rare, modern manufacturers (such as **Sovtek, Tungsram, or Philips replacements**) produce high-quality replicas that maintain performance standards.

5. **Good for Vacuum Tube Amplifiers (VTAs)** It is commonly used in guitar amplifiers (e.g., Fender Bassman, Marshall stacks) and hi-fi audio amplifiers due to its warm, smooth sound with moderate gain.

6. **Ease of Replacement** Since it is a standard pentode, finding replacements is relatively straightforward compared to rare or obsolete tubes.

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1. **Filament Voltage Sensitivity** The LN152 requires precise filament voltage (typically **6.3V AC or 12.6V DC**) to function optimally. Incorrect voltage can lead to poor performance, reduced lifespan, or even tube failure.

2. **Heat Sensitivity** Like most tubes, it is sensitive to excessive heat, which can degrade performance or damage the tube over time. Proper heat sinking and ventilation are necessary in amplifier designs.

3. **Limited Modern Production** While replacements exist, original Mullard tubes are no longer manufactured, and some aftermarket versions may vary slightly in performance.

4. **Higher Cost Compared to Cheaper Tubes** While not extremely expensive, it is pricier than budget tubes like the **12AX7 or 12AT7**, making it less ideal for beginners or cost-sensitive projects.

5. **Requires Proper Load Line Matching** Mismatched load lines (resistance in the circuit) can lead to distortion or reduced efficiency. Proper circuit design is essential for optimal performance.

6. **Aging Effects** Even new tubes can degrade over time, especially if used in high-power applications. Regular testing and replacement may be necessary for critical audio applications.

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The **Mullard LN152 (ECL80/6AB8)** is an excellent choice for audio amplification, guitar amplifiers, and high-quality vacuum tube circuits due to its strong gain, low distortion, and reliability. However, it requires careful handling in terms of filament voltage, heat management, and circuit design to ensure longevity and optimal performance.

If you are building a **high-end audio amplifier, a classic guitar amp, or a vintage-style VTA**, this tube is a solid investment. For beginners or budget-conscious projects, cheaper alternatives like the **12AX7 or EL34** might be more practical.

- **Buy it if:** You need a high-performance pentode for audio amplification, guitar amps, or a project requiring strong gain with minimal distortion.

- **Avoid it if:** You are on a tight budget, need a tube for a simple preamp, or are unsure about proper filament voltage and circuit requirements.

- **Best for:** DIY audio enthusiasts, vintage amplifier restorations, and those seeking a reliable, high-quality replacement tube.

For the best results, pair it with a **proper power supply, heat sink, and well-designed circuit** to maximize its lifespan and performance.

Details:

Shipping charge of $9.95 to anywhere within the lower 48 USA. Take a good look at the pictures as they give much better than words can. Tested Audio Preamps Stereo Vintage Radio Vacuum Tube. We combine shipping.

part #: ln152 prices

• $32.49-$129.00

specifications tubesocketvintagego:

• brand: Mullard
• mpn: Ln152
• model: Ecl80 Ln152 63tp 6ab8
• type: Vacuum Tube
• country of origin: United Kingdom

returns tubesocketvintagego:

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

offer tubesocketvintagego:

• availability: In Stock
• best offers: True
• quantity: 1
• sold: 0
• options: Ship-to-home
• started: March 21, 2026

general tubesocketvintagego:

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

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shipping tubesocketvintagego:

• carrier: USPS
• service: USPS Ground Advantage
• class: Standard
• transit: 4-9 Days
• type: Fixed
• cost: $9.95

seller tubesocketvintagego:

• city: Salt Lake City, Utah
• # reviews: 3305
• rating: 99.9%

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