Description
Plese Check Photo and Discription.Please feel free to message me if you have any concerns. Product Description; Tube-type stereo integrated amplifier, the fourth generation of the 38 series counting from the first stage SQ38F released in August 1973. Dimensions: W 440 x H 162 x D 343mm Weight 20.1kg The high sound quality of the past has been restored through thorough maintenance and overhaul, including revival of defective contacts and replacement of deteriorated parts, so that the amplifier can be used for many years to come. The only drawback of vintage amplifiers is the power supply, which is the entrance to the sound. This allows you to use your favorite ultra-thick power cables, which will further improve the sound quality. In addition, special attention has been paid to the sound exit and speaker terminals to improve the power transmission and operability. By replacing the gold-plated plugs with gold-plated plugs that are compatible with extra-thick cables and banana plugs, we have created specifications that respond to the users preference for ease of operation and sound quality. Main maintenance items; For the internal circuitry, the volume control volume, switches, etc. were disassembled, cleaned, contact points were restored, and the output transformer was replaced. We removed resin from each part, replaced the block capacitor in the power supply section, replaced the power diode, replaced the coupling capacitor, and added a circuit for bias adjustment and made improvements and repairs. We also added a circuit for bias adjustment and made other improvements. As for the sound, especially the sound of wind instruments, etc., is producing a transparent tone that is typical of LUXMAN. The output is well balanced, so the JBL 4311, 4312 series, etc. are playing a powerful sound quality with plenty of room to spare. The tubes are consumables and should be managed by the customer. The pre-tube can be easily replaced, but if the power tube is replaced, bias adjustment is required. Please refer to the following page for a visual check of the final data, including the status of maintenance, confirmation of left and right sound pressure, etc., and the actual measurement of EQ-RIAA, residual noise, and frequency response of the power block and pre-block after all work is completed. You can see from the graphs that the sound quality is perfect in terms of all data. For this residual noise measurement, we used a PC oscilloscope and image conversion application, and WG (WaveGene) and WS (WaveSpectra) were used for the frequency characteristics. In addition to the data, we also carefully check for noise caused by repeated contact failures and other defects after listening for long periods of time in a dead environment with little sound reflection. We are absolutely confident in our maintenance techniques, which are backed by our diverse experience and skills. We will take full responsibility for any initial defects that may occur due to transportation or other reasons. We will also take full responsibility in the event of malfunctions due to other reasons.?? We will repair any defective product free of charge within six months of purchase. Please bear the shipping costs for the return trip. In the event of a malfunction due to operational errors, excessive input, heat buildup, or problems with the installation environment, the actual repair cost will be charged, even if the malfunction occurs within six months. Please note that the appearance of the product has been improved as much as possible by simple painting and repairs, but there are scratches, scuffs, etc. due to the passage of time. The condition of the case is subjective, but this time it is in good condition. Please contact us for maintenance services. Please contact us from the e-mail address in the self-introduction column with your name, address, contact information, model name, and symptoms. Accessories; One set of instruction manual of copy; 26 pages in total, with characteristic diagram and circuit diagram. If the output tube is replaced or its location is changed, the bias must be adjusted. If the bias is not adjusted, the amplification factor may change, oscillation may occur, or in the worst case, the output transformer may be damaged or the output tube may be broken. However, if the user has a tester or other measuring device, a resistor has been added to the cathode of the output tube, similar to the circuit of the MQ-38 and KMQ-60, so that the bias adjustment can be easily made when replacing the output tube with a different tube. We have prepared a bias adjustment manual, so if you need it, please ask us after bidding. Maintenance Concepts] [Our Maintenance Concepts] (1) Pursuit of high sound quality. Improvement of usability of the equipment. Overhaul and implementation for long-lasting use. SHIPPING?FedEx DHL or Japan Phost?From JapanPackages usually leave our warehouse within 10 days of payment.Weekend orders will ship on Monday or Tuesday.We provide valid Tracking Numbers for all orders. We will ship via FedEx. We can also ship by Japan Post. Please contact me prior to purchase if you wish to ship by Japan Post. PEYMENTS?PayPal?Debit?Cards?Credit?CardsWe ship within 48hours of payment.We Ship Within10 Days of Payment. RETURN INFORMATION?Exchabge possible within 30 days.?If you Have any Problems, Please Contact us in Advance Customoms Duty?Import duties, taxes, and charges are not included in the item price or shipping cost.?These charges are the buyers responsibility.? Please check with your countrys customs office to determine what these additional costs will be prior to bidding or buying.
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(36) : 440.05 €
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