AMPEREX CV5094 Tube EL86 6CW5

( Brand: Amperex ), ( Manufacturer Part Number: CV5094 ), ( Model: EL86 6CW5 CV5094 6 33 6P33P ), ( Type: Vacuum Tube ), ( Country Of Origin: France )

Review AMPEREX Lot Of Tube Tested Good

The **Amperex CV5094 Tube (EL86, 6CW5)** is a high-performance, versatile vacuum tube designed for audiophile-grade amplification and high-fidelity audio applications, offering a refined blend of warmth, clarity, and dynamic response that appeals to both purists and discerning listeners. Part of Amperex s renowned line of glass-envelope tubes, the CV5094 is a direct descendant of the classic **6CW5 (EL86)**, a power pentode widely celebrated for its rich harmonic content and ability to drive high-quality speakers with exceptional musicality. Encased in a sturdy, high-vacuum glass bulb, this tube features a **9-pin base** and operates at a nominal **6.3V filament voltage**, making it compatible with a wide range of tube amplifiers, preamps, and guitar amplifiers where its smooth, midrange emphasis and subtle compression can elevate performance.

The **EL86 (6CW5) is a power pentode**, meaning it combines the efficiency of a pentode with the power-handling capabilities of a beam power tube, delivering a balanced output with reduced distortion and a natural, organic sound signature. Amperex s meticulous manufacturing process ensures consistent performance, with each tube rigorously tested for electrical characteristics such as **plate dissipation, transconductance, and gain**, all of which contribute to its reputation for reliability and musicality. The **glass envelope** not only provides superior thermal stability compared to metal-enclosed tubes but also enhances the tube s aesthetic appeal, making it a favorite among audiophiles who value both form and function.

In audio applications, the CV5094 excels in **power amplification stages**, where its ability to drive speakers with a full, extended frequency response and a touch of harmonic richness makes it a staple in high-end tube amplifiers. Whether used in **preamplifiers for subtle gain staging** or as a **power tube in stereo amplifiers**, its performance is characterized by a **warm, slightly rounded high-end** and a **smooth, unobtrusive midrange**, which helps to reveal the intricate details of music without overpowering the listener. Guitarists and musicians, too, appreciate its **natural compression and smooth overdrive characteristics**, making it a popular choice in **tube guitar amps** where it can add a velvety, vintage-inspired tone with controlled sustain.

Amperex s **CV5094 is a direct-drop replacement** for the original **6CW5 (EL86)**, ensuring compatibility with vintage and modern tube gear alike. Its **high-quality materials and precision construction** make it a durable component, capable of delivering thousands of hours of reliable service with proper care. For audiophiles and musicians seeking a tube that bridges the gap between vintage warmth and modern clarity, the Amperex CV5094 stands as a testament to the enduring legacy of the EL86, offering a refined, musical experience that enhances any audio system it graces. Whether in a **high-end stereo amplifier, a classic guitar rig, or a custom-built tube preamp**, this tube delivers the kind of **organic, dynamic sound** that only the finest vacuum tubes can provide.

### **Pros and Cons of buying a Amperex CV5094 Tube (EL86, 6CW5)**

1. **High Performance and Warmth** The EL86 (6CW5) is renowned for its rich, smooth, and detailed sound, particularly in guitar amplifiers and high-end audio applications. It excels in midrange clarity and harmonic complexity, making it ideal for genres like blues, jazz, and vintage rock.

2. **Reliability and Durability** Amperex is a well-established manufacturer with a strong reputation for producing high-quality vacuum tubes. The CV5094 (EL86 equivalent) is a robust tube with a long lifespan when used within proper operating parameters, reducing the need for frequent replacements.

3. **Versatility** The EL86 is a versatile tube, suitable for both guitar amplifiers (as a power tube) and preamp applications. It can also be used in high-end audio equipment like preamps, phono stages, and tube amplifiers for hi-fi systems.

4. **Availability and Replacement Parts** As a widely used tube, the CV5094 (EL86) is easy to find in the market, both new and used. This ensures continuity in repairs and upgrades for older amplifiers.

5. **Superior Harmonic Distortion** Unlike some modern tubes that may sound overly bright or harsh, the EL86 produces natural, musical distortion that many audiophiles and musicians prefer. It s particularly prized for its ability to add warmth without excessive grit.

6. **Compatibility with Vintage Gear** Many classic amplifiers (e.g., Fender Twin Reverb, Marshall Plexi, and Gibson GA-5) were designed with EL86s in mind. Using a CV5094 ensures authenticity in vintage setups.

7. **Lower Power Consumption Compared to EL34s** While not as powerful as an EL34, the EL86 is more efficient in some configurations, making it a good choice for smaller amplifiers or applications where power draw is a concern.

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1. **Lower Power Output** The EL86 is generally less powerful than an EL34 or 6L6, producing around 10-15 watts per tube in a typical configuration. This means it may not be ideal for high-gain or high-volume applications without additional amplification.

2. **Limited Modern Use in High-Wattage Amps** While EL86s are fantastic for vintage-style tones, they are rarely used in modern high-wattage amplifiers (e.g., 100W rigs) because their power output is insufficient for such setups.

3. **Sensitivity to Operating Conditions** Like all tubes, EL86s can be affected by voltage fluctuations, poor power supply regulation, or incorrect filament voltage, which may shorten their lifespan or degrade performance.

4. **Higher Cost Than Budget Tubes** While not excessively expensive, the CV5094 (EL86) is more costly than entry-level tubes like the 12AX7 or 12AT7. For budget-conscious buyers, this may be a drawback.

5. **Not Ideal for Extreme Gain or Modern Distortion** The EL86 s natural distortion profile is smooth and musical but lacks the aggressive breakup found in EL34s or modern gain tubes. Musicians seeking high-gain tones (e.g., metal, modern rock) may find it limiting.

6. **Filament Voltage Sensitivity** The EL86 requires precise filament voltage (typically 6.3V AC or 12.6V DC) to perform optimally. Incorrect filament voltage can lead to poor sound quality or tube failure.

7. **Limited Availability of High-End Alternatives** While the EL86 is widely available, some audiophiles prefer rare or boutique tubes (e.g., Mullard EL86s, Soviet-made equivalents) for superior performance, which may increase costs.

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The Amperex CV5094 (EL86, 6CW5) is an excellent choice for musicians and audiophiles seeking a warm, detailed, and vintage-inspired tone. Its reliability, versatility, and natural harmonic complexity make it a staple in guitar amplifiers and high-end audio applications. However, its lower power output and limited suitability for high-gain or modern setups may make it less ideal for certain genres or high-volume performances.

If you prioritize **authentic vintage tones, smooth midrange response, and long-term reliability**, the Amperex CV5094 is a strong recommendation. On the other hand, if you need **high power output, extreme gain, or modern distortion**, you may want to consider alternatives like EL34s, 6L6s, or modern gain tubes.

- You own or plan to restore a vintage amplifier (e.g., Fender, Marshall, Gibson).

- You seek a warm, detailed tone for blues, jazz, or classic rock.

- You value reliability and ease of replacement parts.

- You are working with a smaller amplifier or a setup where power output is not a primary concern.

- You need higher power output (e.g., for live performances or high-gain setups).

- You prefer a more aggressive distortion profile (e.g., EL34s for rock/metal).

- You are on a tight budget and can find equally good used tubes at a lower cost.

For most vintage amplifier enthusiasts and audiophiles, the Amperex CV5094 remains a top-tier choice due to its balance of performance, warmth, and dependability.

Details:

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

part #: cv5094 prices

• $14.99-$24.99

specifications tubesocketvintagego:

• brand: Amperex
• mpn: Cv5094
• model: El86 6cw5 Cv5094 6 33 6p33p
• type: Vacuum Tube
• country of origin: France

offer tubesocketvintagego:

• quantity: 1
• started: April 21, 2026
• availability: In Stock
• sold: 0
• options: Ship-to-home

general tubesocketvintagego:

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

seller tubesocketvintagego:

• rating: 99.9%
• # reviews: 3404
• city: Salt Lake City, Utah

payments tubesocketvintagego:

• credit card: Discover
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returns tubesocketvintagego:

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

shipping tubesocketvintagego:

• carrier: USPS
• class: Standard
• transit: 3-7 Days
• type: Fixed
• cost: $9.95
• service: USPS Ground Advantage

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