Whatsapp Contact:
Shenzhen Grand Technology Co., Ltd
Specification:
Handmade version: Welding by hand point-to-point upgrade version. Manual welding, preferred audiophiles, the output transformer switch to the higher end of the 76 * 40 output transformer. When low-frequency dynamic playback is good, control and strong, it is more powerful.
Features:
Specifications:
| Amp Name | Custom Grand Point to Point EL34 Tube Amp Single-End Class A HiFi Audio Amplifier |
| Handwired version | Welding by hand point-to-point upgrade version. Manual welding, preferred audiophiles, the output transformer switch to the higher end of the 76 * 40 output transformer. When low-frequency dynamic playback is good, control and strong, it is more powerful. |
| Features | Power Transformers: new imported 0.35, stack thickness 50MM (96-50). Output transformer core: new imported 0.35 (66*36(standard version)) or (76*40upgrade version). Chassis: imported mirror stainless steel chassis. Corners aluminum column: high-grade aluminum CNC machining, diamond knife speed car system. Output Block: High-grade export base, with a transparent cover. 6N2J pre-voltage amplification. Psvane EL34B do power output. Potting type output transformer, to ensure the stability and reliability of the output transformer, especially in the southern humid places, have a more reliable performance. Output transformer with a new imported 0.35 core manufacturing, high-purity copper wire package enameled, layered segmentation, string and connection method, divided into three clips two around the system, Output transformer transformer housing with high-grade stretch hood. High temperature paint surface treatment, bright pattern processes. Nissan ALPS potentiometer. Imported 0.35 thick core manufacturing power transformers, to ensure adequate power and low temperature rise. |
| Specification | Output Power: 6W * 2 (Ultra-linear). Frequency response: 20Hz - 28KHz. Output Impedance: 4,8Ω. Total harmonic distortion: ≤ 1% (1kHz). SNR: 88dB. Voltage amplification: 6N2J × 2. Power output tube: shuguang EL34B × 2. Rectifier tube: 5Z4PJ × 1. Input sensitivity: 750MV. Input impedance: 100KΩ (2 groups input) Dimensions (W × D × H): 310 × 268 × 165mm. Power Supply Voltage: AC 230V / 50Hz-60Hz,AC 240V / 50Hz-60Hz |
| Tube Amplifier Precautions | 1. Tube amp must connected with speakers before turning ON. Strictly prohibit send signals to amp without connected loads(speakers) or load short circuit when the switch is ON. 2. Too high or too low power supply voltage does irreversible harm to the amp,preferably less than 5% of the specified voltage. If your mains voltage exceeds this value, often best to use with the AC power supply. 3. Temperature is higher when tube amps working, placing attention to ventilation, cooling. 4. In the boot or just shut down for a period of time (within 30 minutes) Do not spill liquid on the tubes. 5. You should take about 100h time to operate the amp.RUN-IN to the amp gives it's best and stable sound.so during the first 100h use time the sound maybe is not the best,you can also use your own run-in method. 6. If you donot sure how to plug the tubes, please contact us before try it |
| Speakers connection | All tube amplifier used with stereo mode: L(left) and R(right) speakers. Normally there are 6 speaker cable connectors: +8L, +4L, -0L, -0R, +4R, +8R Example: +8L and -0L are for connecting with your Left 6-8ohms speaker -0R, +4R is for connecting with your Right 4ohms speaker |
| Tube Brand | Ruby, Shuguang, JJ, EH |
| Brand | Grand or custom as per logo plates |
Introduction:
Our company has 230 workers, include 15 professional engineers. They supervise the whole producing line from choose material till packing. We can strictly arrange the products as your requests.
Grand Technology is a manufacturer of musical instruments and accessories, which brand is "Grand".
Our factory is located in one of the most important ports of South China, Shekou, Guangdong, Near HK, connects with main highways and airports.
As the professional manufacturer, we supply kinds of musical products such tube guitar amplifiers, hand wired tube guitar amps, point to point amps, replica pedals and amps, electric guitars, acoustic guitars, ukulele, banjo, piano, etc many kinds of musical Instrument gears.
We only provide good quality products with low prices, which are selling well in the international markets, such as USA, Europe, Japan, Korea, South Africa, Kenya, South America, etc. We have plenty experiences in exporting, and be good at holding the mainstream of musical instrument markets.
At present, we establish technology, purchasing, and sales groups to serve our customers. We are thinking in your way, doing as your requests and eager to be your reliable supplier.
Any inquiry will be welcome and highly appreciated.
Custom amplifier project?
We are specialized in OEM/customize guitar, AMP, pedal, etc order, if you need a customize guitar amplifier, please feel free to talk with us.
Please feel free to ask me project example for reference.
Please beware the customize guitar AMP can take as long as 45-90 days depends on AMP schemaitc complex term.
Our Services:
1. OEM/ODM factory direct.
2. Professional engineers who have the ability to create what customers need.
3. High quality guarantee with competitive price.
4. Have a full set of testing equipment for products' functions to ensure reliable quality.
5. Fast feedback within 2 hours.
6. Shipping on-time.
7. Aftersale service, if any reason in our side, we can free exchange for you.
8. All of our product have attained CE, RoHS and related certificates approval.
FAQ:
Q1:What is your Warranty for the products?
A1:We provide 1 Years' Warranty and 7 days Return Services.
More details pls contact our Sales.
Q2:May I buy samples from you?
A2:Yes! You are welcome to place sample order to test our superior quality and service.
Q3: What's the leading time? (How long do you need to prepare my goods?)
A3:10 working days for sample orders.
30 working days for bulk order (based on different quantities).
Q4: How will you deliver my goods to me? How long do I need to wait before my goods arrive?
A4:We offer many shipping ways like DHL, UPS, FedEx, TNT ,EMS to enable our customers get their goods rapidly at door. We also ship by economic method such as air cargo and sea cargo, Direct line, Air Mail according to clients' request.
3-7 days for international express, 5-7 days for air cargo, 20-40 days via sea cargo.
Q5: How is your product quality?
A5:We provide unrivaled Quality - Very rigorous testing process for Incoming Quality Control, Input Process Quality Control, and Final Quality Control for every piece. We follow 20 QC test procedure, and do 100% FQC to ensure your satisfaction.
Q6: Can you put my brand name (logo) on the products?
A6:Yes! We can provide professional OEM services to make it your brand even for your trial sample order.
A7: If your order is over 20pcs, we can make your own logo badge brand on the amp for free! About other more details, it's according to your special requirement.
Q8: What payment method do you accept?
A5: T/T(Bank transfer), Western Union, Paypal, Escrow, etc.
Q9: Do you have any After-Sales service?
A9:Yes! We have professional After-sales service
If you have any technical problem or questions with the goods, welcome to contact our Technical Support Dept. or our sales directly.
Q10: Are you just trading company or factory?
A10: We are professional manufacturer for musical instruments products. We can supply the unrivaled Quality and Services with competitive factory price.
Choose Amp, Choose Grand!!!
