Name: JJ ELECTRONIC s.r.o.
Address: A. Hlinku 3, CADCA, Slovak republic, 022 01, SK
Email: info@jj-electronic.com
Website: https://www.jj-electronic.com/en/
European Manufacturer: Yes
Welcome to our store
🚚 Free shipping 🇮🇹 Italy & 🇺🇸 USA on orders over €180
JJ ELECTRONICS
Couldn't load pickup availability
6550 JJ ELECTRONICS AMPLITREX Platinum Matching Tubes
MADE IN SLOVAK REPUBLIC
The 6550 JJ Electronics , produced in the Slovak Republic , is a modern power tube designed to offer electrical robustness, tonal consistency and long life . This Platinum Matched pair was selected on AMPLITREX AT-1000 , taking into account not only the static values (Gm and Ia), but also the response curves , at the end of a controlled 24-hour burn-in on a vacuum tube burn-in station . This process allows to reach maximum operational stability before the matching phase.
Bass : Deep, fast and well defined. The attack is decisive, with excellent control even in the most complex passages or in prolonged low frequencies. Excellent dynamic stability and no swelling.
Mids : Neutral and articulated, with a natural and slightly dry presence. Vocals and lead instruments are well placed in the mix, without invasive colorations.
Highs : Transparent and brilliant, with a controlled extension that returns detail without ever being aggressive. The high range remains intelligible even at high volumes.
Dynamics : Fast and stable. Transient response is responsive and linear, with consistent behavior even under stress. The result is a precise and well-sculpted sound.
Soundstage : Neat, with good depth and stability. The stereo image is focused and coherent, suitable for both hi-fi and professional contexts.
This Platinum Matched pair of 6550 JJ Electronics , subjected to a careful selection and stabilization process, is ideal for those looking for power, precision and reliability both in high-power tube hi-fi systems and in guitar or bass amplifiers where high headroom and constant behavior over time are required.
🎸 Use in Guitar and Bass Amplifiers
This Platinum Matched pair of 6550 JJ Electronics , selected on AMPLITREX AT-1000 after a 24-hour burn-in , represents an excellent choice for professional tube heads , where power, headroom and stability over time are required. The matching based on real response curves guarantees a homogeneous behavior, essential in push-pull power amplifiers or in high-fidelity stereo configurations.
🔊 Ideal for musicians looking for:
✅ Clean, powerful and transparent, with very low compression
✅ A controlled and defined overdrive, which does not lose detail even at high volumes
✅ Prompt and precise dynamic response, ideal for playing with control even at high gain
✅ Punchy and precise bass, perfect for bassists who want punch and definition
Examples of amplifiers where it performs very well:
🎸 Ampeg SVT-VR / Classic / V4B – Excellent low-end handling and plenty of headroom
🎸 Marshall Major / VBA / Vintage Modern – Great tonal authority and stability even under stress
🎸 Fryette Deliverance / Pittbull / Power Station – Clear dynamic response, also useful in the studio
🎸 HIWATT DR405 / Custom 200 – Clean and headroom for bright sounds and tight punch
🎸 Boutique amps and custom high-power models – Precise matching useful for maintaining balance and reliability in dual mono or parallel configurations
🎯 Note for professional musicians:
The Platinum selection on curve guarantees a constant and predictable response even after hours of continuous use. These are modern valves with a controlled, focused and highly reactive voice , ideal for those who require sound quality, thermal resistance and professional performance .
Also available on request 8, 12 and 16 selected tubes. Contact us.
Our instruments are calibrated with reference tubes.
Measurements are taken after 10 minutes of preheating the tubes.
Test Conditions:
Va = 400V; Vg2 = 225; Vg = -16.5V
Further tests performed:
Emission Quality
Short Circuit Test
GAS Test
Shipping with protected packaging for greater safety.
Recycled and recyclable paper packaging. Brown paper sealing tape - ECO-KRAFT
Eco-friendly - SOLVENT FREE
Shipping costs.
Shipping costs vary depending on the total amount of the items in the cart and are calculated automatically during the purchase procedure. All parcels travel insured and the courier is automatically chosen based on the destination to be reached.
Shipping times and delivery methods.
The delivery times indicated are to be considered purely indicative.Delays or unilateral changes by the carrier to a collection point (for example near periods of heavy traffic such as holidays) are in no way attributable to Vacuum Tube Treasures. Each instance remains the responsibility of the Customer and must be resolved directly with the Express Courier used.
Shipping abroad.
For all purchases from countries outside the European community, any import customs fees will be paid by the recipient. Vacuum Tubes Treasures has no control over import customs duties which may vary from country to country, so please contact your country's customs office to verify import costs.
Warranty
All products that can be purchased on Vacuum Tubes Treasures are covered by a warranty, as regulated by Legislative Decree no. 206/2005 (Consumer Code) and by the Civil Code, in the part dedicated to the sales contract, in articles. 1490 et seq.
What is the guarantee.
The guarantee means the commitment undertaken by Vacuum Tubes Treasures towards the customer to repair or replace free of charge and within a reasonable period of time, the products or components of the appliances which present defects of conformity in the manufacturing or material. If the repair or replacement of the goods proves to be excessively expensive or problematic, the customer can obtain a price reduction or termination of the contract. To determine the amount of the price reduction or the sum to which the customer is entitled in these cases, the use that has been made of the product is taken into account.
Remember that minor defects, for which it is not possible or excessively expensive to repair or replace, do not give the right to terminate the contract.
If the product you purchased is defective, contact us immediately, so that we can find the most suitable solution to your needs.
Different customers, different ways of exercising the guarantee.
For consumers - i.e. for "natural persons acting for purposes unrelated to any entrepreneurial or professional activity carried out" (art. 3, paragraph 1, letter a) of Legislative Decree 206/2005) – the guarantee extends to two years following delivery of the goods. For second-hand products the guarantee is one year.
To exercise your right, you must notify us of the lack of conformity you have found no later than 60 (sixty) days from discovery.
For the first six months from delivery of the product, it is assumed that the lack of conformity found existed from the origin, therefore the application of the guarantee is automatic. From the seventh month, until the end of two years, however, the lack of conformity must be demonstrated with a specific appraisal at your expense.
The consumer, in any case, is the owner of the rights provided for by the Consumer Code to the articles 128 – 135, which are not modified by this warranty.
To those who, however, purchase a product on Vacuum Tubes Treasures for purposes relating to their business or professional activity - therefore communicating the VAT number and the data of their activity - the provisions established by the Civil Code on the matter will be applied of sales contracts, in articles 1490 et seq.
The guarantee, therefore, extends to 12 (twelve) months following delivery of the goods, while the communication of the lack of conformity must be made within 8 (eight) days from discovery.
In any case, whether you are a consumer, a business or a professional, you must communicate the lack of conformity you have found to: Vacuum Tubes Treasures di Tiziano Di Natale Via Trento n. 48 - 64011 - Alba Adriatica - TE - C. F.: DNTTZN73R27Z133P - VAT number: 02113940676 - Telephone: +39 328 7341456 - Email: info@dynakitfriends.com
The guarantee will be recognized by presenting the purchase invoice or document of sale in the original.
The warranty does not cover:
· Accidental damage or damage caused by loss, non-use of the product, tampering, normal wear and tear, or loss of information made available to the customer at the time of sale.
· Damage that may, directly or indirectly, arise to people, things or animals as a result of failure to observe the provisions indicated in the appropriate operating manuals and concerning, in particular, the warnings regarding Installation, Use and Maintenance of the product. For such damages Vacuum Tubes Treasures declines any type of responsibility.
· Damage caused by negligence, incorrect use and installation and not compliant with the warnings and indications given in the instruction or installation manual; damage from misuse, mistreatment, deterioration, lightning, atmospheric phenomena, overvoltages and overcurrents, insufficient or irregular power supply, adaptation or modification, nor damage caused by incorrect use or in contradiction with the technical measures and safety requirements required in the country in which the appliance is used.
· Damage or malfunctions deriving from replacements or repairs carried out directly by the customer or by third parties, using parts not authorized by the relevant manufacturers or not complying with the appropriate measures of safety and quality.
· Consumable parts subject to normal wear and tear, such as light bulbs, lamps, batteries, etc.
Right of Withdrawal
Purchases made on the Vacuum Tubes Treasures website are governed by Italian legislation regarding distance contracts and off-premises purchases, which you can find in Legislative Decree no. 206/2005, better known as the Consumer Code.
We undertake to reimburse the entire amount as soon as possible and in any case within the legal deadline of 14 (fourteen) days from the date on which we receive the goods back.
The consumer has the right to withdraw from the contract, without giving reasons, within 14 days. The withdrawal period expires 14 days after the day on which you or a third party, other than the carrier and designated by you, acquires physical possession of the goods. To exercise the right of withdrawal, you are required to inform us (Insert name, geographical address and, if available, telephone number and e-mail address) of your decision to withdraw from this contract through an explicit declaration (e.g. letter sent by post, fax or email). To comply with the withdrawal deadline, it is sufficient for you to send the communication relating to the exercise of the right of withdrawal before the withdrawal period expires.
Effects of withdrawal.
If the customer withdraws from this contract, all payments made to us will be refunded, including delivery costs, without undue delay and in any case no later than 14 days from the day on which we are informed of the Your decision to withdraw from this contract.
These refunds will be made using the same payment method you used for the initial transaction, unless you have expressly agreed otherwise; in any case, you will not incur any costs as a consequence of such reimbursement. The refund may be suspended until receipt of the goods or until the consumer demonstrates that he has sent the goods back, if earlier.
Shipping address: Vacuum Tubes Treasures di Tiziano Di Natale - Via Trento n . 48 - 64011 - Alba Adriatica (TE) - Tel. +39 328 7341456, without unjustified delays and in any case within 14 days from the day on which you communicated your withdrawal from this contract. The deadline is met if you send back the goods before the expiry of the 14 day period.
«The costs of returning the goods will be your responsibility.», The consumer is responsible for the decrease in the value of the goods resulting from a manipulation of the goods other than that necessary to establish their nature.
In these cases, however, we always advise you to contact us, to provide you with further information and to find together the best solution for returning the goods, also via our couriers.
Sources: Art. 49 paragraph 1 h), paragraphs 4 and 5; art. 22 paragraph 1 e) Consumer Code; Annex A, Legislative Decree 21/2014 which modifies the Consumer Code
Consumer or non-consumer?
The protection of the Consumer Code applies to consumers or users, i.e. to “natural persons who act for purposes unrelated to any entrepreneurial or professional activity carried out” (art. 3, paragraph 1, letter a) of Legislative Decree 206/2005). The right of withdrawal as presented here, therefore, cannot be exercised by legal entities and natural persons acting for purposes related to a commercial and/or professional activity. Purchases made by resellers or by individuals who in any capacity purchase for resale to third parties are also excluded.
And if we were wrong?
In the event that you have received a item that you did not want due to our error, the right of withdrawal remains unchanged, but obviously the shipping costs for returning the goods will be at our expense. Contact us to find the quickest and easiest solution.
Damaged products. If you receive damaged goods, please notify us within 5 (five) working days via email or telephone, quoting "damaged items" in the subject of the email, or via telephone.
Regulatory references. You can find the full text of the Consumer Code at the following link: http://www.camera.it/parlam/leggi/deleghe/testi/05206dl.htm, in particular articles 64 – 67, specific to the consumer's right of withdrawal.
Name: JJ ELECTRONIC s.r.o.
Address: A. Hlinku 3, CADCA, Slovak republic, 022 01, SK
Email: info@jj-electronic.com
Website: https://www.jj-electronic.com/en/
European Manufacturer: Yes
Name: JJ ELECTRONIC s.r.o.
Address: A. Hlinku 3, CADCA, Slovak republic, 022 01, SK
Email: info@jj-electronic.com
Website: https://www.jj-electronic.com/en/
Please understand that the writing on the glass of vintage valves has become very delicate over the years and comes off easily. You must handle them with extreme care to avoid this. Wear and damage to the writing on the valves reduces their market value and causes damage. Please exercise extreme caution.
We wish to inform you that any attempts to manipulate shipping destination information in order to obtain lower shipping rates may be considered fraudulent acts. Please provide accurate information and contact us if you have any concerns. We reserve the right to review and, if necessary, cancel orders that we deem to be in violation of our conditions. Thank you for your understanding and cooperation.
Valvole arrivate in ottimo imballo, con specifiche di test e corrispondenti alla descrizione. Testate su Dac Aqua La Scala, il suono è molto dinamico, veloce ed aperto rispetto ad altre coppie sin qui testate ed a quelle originali del dac. Ottimo, tendente all'asciutto, anche il basso.
Very reliable seller, fast delivery and safe packing. Excellent Service and Quality! Big choice of tubes. Highly recommended!
As usual, excellent service from Vacuum Tube Treasures. Vintage tubes are always exactly as described and authentic so I can buy with confidence.
Thank you Tiziano for fantastic advice when looking for electron tubes. Beautiful packaging and equally beautiful tubes. I will definitely come back someday. I recommend!
Tutto perfetto, oggetto esattamente come da descrizione. Spedizione velocissima.