- Home Page /
- Musical Instruments /
- Musical Instrument Accessories /
- Guitar Accessories /
- Amplifier Accessories /
- Parts /
- Tubes /
- Mullard CV4004 / 12AX7, Matched Pair
0 ratings
Item #:
4161526
Mullard CV4004 / 12AX7, Matched Pair
90% of respondents would recommend this to a friend
Item #:
4161526
TZS 184840
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
0 ratings
Write a review
In stock
Imported from USA store
QTY:
Order now and get it around Tuesday, October 13
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
A high gain, low noise valve designed for high gain Marshall pre-amplifier circuits. Perfect for guitar amps.
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
Matched Pair
These 12AX7 tubes are expertly matched for optimal performance, ensuring consistent sound quality and reliable operation in audio applications such as amplifiers or recording equipment.
High Gain
Designed for high-gain amplification, the CV4004 tubes enhance signal clarity and detail, making them an ideal choice for musicians and audio engineers seeking superior sound reproduction.
Longevity
Crafted for durability, these tubes offer extended lifespan and stable performance, minimizing the need for frequent replacements, which translates to cost savings and reliability in professional settings.
Product Details
| Country of Origin | This item will be imported from US |
| Item Weight | 0.5 lbs (230 grams) |
| What is in the box | Mullard CV4004 / 12AX7... For more details, please check description/product details |
Who Should Buy?
-
Guitar Amplifier Users
Ideal for guitarists seeking to enhance tone and clarity in their tube amplifiers with matched pair performance.
-
Audio Professionals
Great for sound engineers requiring consistent, high-quality sound reproduction in recording studios and live settings.
-
Hobbyist Tube Enthusiasts
Perfect for audiophiles looking to upgrade their tube equipment for improved sonic experience and musicality.
-
Budget-Conscious Buyers
May not suit users looking for low-cost options, as matched pairs can be more expensive than standard tubes.
Product Description
Mullard CV4004 / 12AX7, Matched Pair
About This Item
Introducing the Mullard CV4004 12AX7 Matched Pair, the perfect addition to your high gain Marshall pre-amplifier circuit. Designed with a short plate structure, this valve reduces microphonics and delivers a superior performance with minimal noise interference. Crafted by Mullard, a trusted brand known for their exceptional quality and attention to detail, the CV4004 12AX7 is specifically engineered for guitar amps. It is the ideal solution for musicians who demand the best from their equipment. The Mullard CV4004 12AX7 boasts a high gain capability, allowing you to achieve a powerful and dynamic sound.
Say goodbye to unwanted noise and microphonics with this premium valve. Each matched pair undergoes rigorous testing to ensure optimal performance and reliability. You can trust that every valve in this set will provide consistent and exceptional sound quality. Whether you're a professional musician or an avid audio enthusiast, the Mullard CV4004 12AX7 is a must-have for your collection. Experience the difference it can make in your amplifier circuit. Don't miss out on the opportunity to own a piece of audio excellence.
Order your Mullard CV4004 12AX7 Matched Pair today and elevate your guitar amp to new heights of performance.
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is a CV4004 12AX7 tube and how is it different from other tubes?
Answer: The CV4004 12AX7 tube is a type of vacuum tube known for its high gain and low noise characteristics, making it ideal for audio amplification. It is often used in guitar amplifiers and high-fidelity audio equipment. What sets the CV4004 apart from other tubes is its reliability and consistent performance due to the matched pair configuration, which ensures optimal sound quality. Many musicians and audio engineers choose this tube for its warm tones and dynamic range, enhancing the overall audio experience. -
Question:
Why should I choose a matched pair of CV4004 tubes?
Answer: Opting for a matched pair of CV4004 tubes guarantees that both tubes have closely aligned electrical characteristics, leading to balanced sound and performance. When both tubes amplify the signal uniformly, it reduces distortion and enhances stereo imaging, which is crucial for professional audio setups. If you're a musician or sound technician, using a matched pair can help ensure more cohesive sound within your setup, particularly in guitar amplifiers or audio preamps. -
Question:
How do I install the CV4004 12AX7 tube?
Answer: Installing the CV4004 12AX7 tube involves safely powering down your equipment first and then gently removing the existing tubes from their sockets. Ensure your hands are clean to avoid oils transferring to the tube. Align the pins of the new tube with the socket and carefully push it in place until it is firmly secured. If you're inexperienced, consider seeking assistance or consulting a professional to avoid damaging your equipment. Proper installation ensures optimal performance and longevity of the tube. -
Question:
What types of equipment are compatible with CV4004 12AX7 tubes?
Answer: The CV4004 12AX7 tubes are primarily used in guitar amplifiers, audio preamps, and other high-fidelity audio systems. They are ideal for any vintage or modern electric guitar rig that requires preamplification. Other applications include microphones and any audio equipment where signal amplification is needed. musicians seeking to enhance their sound quality typically find that using these tubes dramatically improves tonal depth and clarity. -
Question:
What are the benefits of using CV4004 tubes in a guitar amplifier?
Answer: Using CV4004 tubes in a guitar amplifier provides significant advantages such as enhanced tonal clarity, dynamic range, and improved sustain. The high gain of the 12AX7 design allows for greater signal amplification without noise, making your guitar sound fuller and more expressive. Musicians often report that swapping standard tubes for CV4004s results in richer harmonics and a warmer overall tone, which is especially beneficial for expressive playing styles. -
Question:
How long do CV4004 12AX7 tubes last?
Answer: The lifespan of CV4004 12AX7 tubes can vary depending on usage, but under normal circumstances, they can last several hundred hours. Factors such as the type of amplifier, volume levels, and frequency of use can influence their longevity. Regular testing and replacement when sound quality deteriorates are recommended to maintain optimal performance in your audio setups. For professionals who use their gear frequently, keeping a set of spare tubes can be a practical approach. -
Question:
What is the sound character of CV4004 tubes?
Answer: CV4004 tubes are renowned for their warm and balanced sound profile, characterized by smooth highs, rich mids, and solid lows. This makes them particularly suited for genres that require tonal nuance and texture, such as jazz, blues, and rock. Musicians may notice that their notes resonate more fully, with a pleasing harmonic distortion that enhances musical expressiveness. This sound character makes CV4004 tubes a popular choice among audiophiles and performance musicians alike. -
Question:
Can CV4004 tubes be used for other applications besides amplifiers?
Answer: Yes, CV4004 tubes can be utilized in various applications beyond guitar amplifiers, such as in high-fidelity audio preamps, recording equipment, and certain types of microphones. Their versatility in amplifying audio signals makes them a favored choice for sound engineers looking to achieve high-quality recordings. By employing these tubes in diverse audio settings, you can expect consistent sound enhancement and clarity across various equipment. -
Question:
How does the CV4004 compare to similar tubes like the 12AX7?
Answer: While the CV4004 and standard 12AX7 tubes share a similar design and purpose, the CV4004 typically offers more robust construction and improved reliability. The CV designation indicates military specifications, promising higher durability and performance consistency under rigorous conditions. Musicians and audio professionals who demand high-quality sound often prefer the CV4004 for its resilience against wear, making it ideal for both studio and live performance settings. -
Question:
Where can I buy CV4004 12AX7, Matched Pair?
Answer: You can purchase the CV4004 12AX7 matched pair at Ubuy in Tanzania. Ubuy specializes in providing electronic components, ensuring that you receive authentic and quality tubes for your audio needs. With their impressive selection, you can quickly find the matched pair you need to enhance your audio equipment.
Mullard Tubes Editorial Review
The CV4004 tubes have received overwhelmingly positive reviews from customers who have used them in various guitar amplifier circuits. Users particularly appreciate the smooth response in both low and high frequencies, as well as the ability to accept boost without introducing noise. The tubes are noted for working well in Marshall-based circuits, especially those that lean towards a darker sound profile. However, they may not be the best choice for those seeking a more midrange-focused tone. Customers have praised the quality of the tubes, mentioning that they were able to replace their amp tubes successfully with the CV4004s. The fast shipping and reasonable pricing are also highlighted as positive aspects of this product. Users have described the tubes as high quality, low noise, and effective in smoothing out harsh distortion. Overall, the CV4004 tubes appear to be a solid choice for guitarists looking to enhance their amplifier's sound with a warm, smooth tone. **
Customer Reviews & Ratings
1 customers ratings
-
5 Star
0%
-
4 Star
100%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
Pros
- Smooth response in lows and highs
- Accepts boost well without noise
- Works well in Marshall-based circuits
- High-quality tubes
- Fast shipping
- Reasonable pricing
Cons
- May not be ideal for midrange-focused tones
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
AG
Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
H
Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
O
Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
AC
Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
TZS 184840
Order now and get it around Tuesday, October 13
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.