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eBay Muzishare X7 KT88 Push-Pull Vacuum Double High Pressure GZ34 Lamp Tube Amplifier * This is the new latest 2021 version X7 upgrade to use 4 x 1200v 0.22uf high-end quality coupling capacitors Technical Parameters: -Rated output power: 25W + 25W (RMS triode mode) 45W + 45W (RMS ultra-linear mode) -Headphone output power: 300ohm with 900mW, use 270 like a basic divide to calculate the output power, for example 270/300ohm=0.9w for 300ohm headphone, 270/32ohm=8.5w for 32ohm headphone -Input impedance: 100KΩ -Output Impedance: 4Ω-8Ω（6） -SNR: 92dB -Output balance of the left and right: <0.5db -Input Sensitivity: 280mV; 520mV (pre input) -Harmonic distortion: 1% (1kHz) -Frequency Machine: 15Hz ~ 30kHz (-1.5dB) -Anode voltage: about 420v -Net weight: 22.5k -Package weight: 25kg -power consumption: 260W -Vacuum tube are Special Customized: Preamp tube: 12AX7 × 1(Equivalant ECC83,CV4004 ECC803,5751) Preamp tube: 12AU7 × 2(Equivalant ECC82,5814,6189 CV4003) Power tube: KT88 × 4 (Equivalant 6550) Rectifier: 5AR4 × 1 (Equivalant GZ34) -Dimension (W × D × H): 410mm x 335mm x 198mm -Power supply voltage: ~ 110-120v and 220-240v ± 5% (50/60Hz) -Working conditions: Temperature: 0 ºC ~ 40 ºC Humidity: 20% to 80% -Storage conditions: Temperature: -20 ºC ~ 70 ºC Humidity: 20% to 90% Features: -Handmade, using scaffolding welding -Using two high quality and wide frequency response EI output transformer -Using a customize Z11 core toroidal power transformer -Amplification and drive part use SAR4 rectifier . -Use 2X12AX7 and 2X12AU7 as amplifiaction, -Use special high selected KT88 tube as push pull power amp lamp,providing switch for the triode connnection and ultra-linear connection modes.The triode connection mode is more suitable for the voice and the sound is more soft, delicat as well as nature. The ultra-linear connection is suitable for the big scence, the sound is more open and lively. -It has a pure power amplifier ans it can conncet with an independent pre-amp's signal input. -There is a power tube current control button and an electric meter dial. -Infrared remote control function -Power Mute delay function -Selection of Japanese high-grade ALPS motor potentiometer. -Easy installation of the plug-type vacuum tube shield Tube Amplifier Precautions: -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. -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. -Temperature is higher when tube amps working, placing attention to ventilation, cooling. -In the boot or just shut down for a period of time (within 30 minutes) Do not spill liquid on the tubes. -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. -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 amplifier guaranty : -Tube amplifier Guarantee: 6 months for tubes sold with amplifier, 1 year for the amplifier and PSVANE tube Payment Terms: 1. We only accept paypal payment, other payment methods are not acceptable. 2. Payment should be completed within 7 days of bid or auction closing. Or unpaid dispute will be filed for non-payer after 7 days of sales day. Shipping Terms: 1. We ship to Worldwide. 2. We ship your orders within 1-2 business days after the payment cleared. 3. Item shipped from HONGKONG/Singapore / China / Post Airmail, reach most of the countries within 15 to 25 days. If some countries cannot send the default shipping channel. need to choose to send FEDEX, DHL, EMS express delivery, you need to pay additional shipping costs, and we will contact you by email for the specific amount. If you need to choose EMS/DHL/FEDEX, please contact us. But the need to charge additional shipping costs. 4. Deivery time depends on destination and other factors, it may takes up to 25 days. If you don't receive the item after 25 days, Please contact us, we'll investigate and solve the delivery problem. Return Terms: 1. If you receive defective item, please kindly notify us within 7 days. We will guide you the returning instruction for replacement or refund. 2. If you purchased in improper condition, please NOTE that the sipping and handling fee will not be refund,All costs incurred for product returns are to be paid by the buyer. (Return the resulting duties,) Guarantee the integrity of the returned product.all return shipping fee should be paid by the buyer unless item DOA.Please notice us within 3 days and return the case within 7 days after receiving (The date on Post Mark is for standard). After our receiving of the items in good appearance condition, you may have a replacement or refund as long as we cancel the order on ebay, and Shipping cost is non-refundable, as you know shipping & handling was paid to post office. 3.If the item was sent back for repair, buyer pays for the returning fee. We will be responsible for 2nd shipping cost & handling. If you ask for replacement or repair after one month since you paid, you need to pay for the 2nd shipping cost & handling. If you have to return the item for the refund, you will pay a 20 % restocking fee. 4.The address on the parcel is not ours, it is the postman, please DON'T SHIP TO THERE. Please contact with us for the return address before you return it, otherwise we can’t get the parcel you returned. Please contact us for return address before you send. Warranty: 1 year carry in warranty. Return and exchange item within 30 days of delivery if item not functioned. Buyer responsible shipping and handling fee. Buyers Please Note: Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer responsibility. Please check with your country customs office to determine what these additional costs will be prior to bidding/buying. Custom Duties & Taxes: 1. Import duties, taxes, and charges are not included in the item price or postage cost. These charges are the buyer's responsibility. 2. Avoiding some unnecessary trouble, please check with your country's customs office to inform us what we should declare its value before shipping. 3. If the condition of your purchase is incorrect, please pay attention to the resulting customs duties for the return, and the customs duties arising from the return should be paid by the buyer, unless the item DOA. Feedback: 1. If you are dissatisfied for any reason, please don't be quick to leave us neutral or negative feedback. We work hard to make sure EVERY CUSTOMER 100% SATISFIED and resolve any problem for you and always leave positive feedback to all our customers. 2. If you are satisfied with the product you received, please kindly leave us a positive feedback and 5 star DSR. If there is any problem of your order, please feel free to contact us firstly, we are responsible and credible seller, will follow it for you asap.
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