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B00LNAKHO0 Availability: Currently unavailable Score: 1000.000 Category: Electronics Rating: 2.8 Votes: 3 Find similar products Nobsound Tube 6N11/12AU7 HIFI Stereo Buffer Pre-AMP Preamplifier. .	B074XNDT35 Price: $8.99 Score: 6.410 Category: Electronics Rating: 3.1 Votes: 23 Find similar products KNACRO DC 10V-24V Low-Pass Filter NE5532 Bass Tone Subwoofer Pre-Amplifier Preamp Board. Power supply voltage: DC12V-24V DC single power supply. Frequency range: 22Hz-300Hz. Audio input: mono or two-channel. Audio output: monaural. PCB Size: 78x32mm, thickness: 1.6mm. PCB Materials: FR-4 ultra-hard glass plate. Finished plate net weight: 30g. Plate mounting holes center to center spacing: 70x24mm, hole diameter: 3.2mm. Potentiometer shaft center to center spacing: 32.5mm. Special reminder: This board is a board bass preamp, directly connected to the speaker will not say anything, must be connected to the subsequent stage amplifier board made of pure active subwoofer to speak, pure stage power amplifier board selected according to individual needs of the degree of shock, The greater the power of pure power amp bass more shocking. The so-called low-pass filter plate is to filter the human voice more than treble part, retain the low frequency part is amplified to improve the bass reproduction efforts will not hear the human voice and high-frequency sound when playing the instrument. The buyer must understand this knowledge, in order to avoid the only, do not know how to use. Most of the market before the subwoofer preamp board are basically dual power, the majority of DIY enthusiasts, is not very convenient to use, after all, a single power supply is relatively easy to find, the premise of guaranteeing effective, we have introduced a single-supply subwoofer home board, you can share a stage with the power amplifier boards, DIY is very convenient. Package included: 1 x Low-pass Filter NE5532 (with 2 rotary potentiometer cap).
B00BX49972 Availability: Currently unavailable Score: 6.369 Category: Electronics Rating: 3.2 Votes: 11 Find similar products NAD Electronics PP2i Energy Saving Phono Preamplifier. .	B00UXJ44JQ Availability: Currently unavailable Score: 6.098 Category: Electronics Rating: 3.4 Votes: 2 Find similar products Little Bear LED MIC Music Level Meter. Quick guide: First: I must tell you that. how is this headphone amplifier design. Actually it's tube buffer + amplifier work model.both function is alone, the music input to 6J1 tube buffer preamp and output to daul NE5532(TI)(each chip for each channel) amplifier part, after music output to your headphone. else ,In back of the P2-1. you will find a OUT interface. that the 6J1 buffer preamp pure output.you can use it as a buffer preamp for your other power amplifier, that's interface music isn't through the headphone amplifier part.so. it's very helpful for install it in your home audio system too. get more warm sound. Secondly: this P2-1 powered by 12VAC, and this list included a transformer already. with both voltage for choice. 110V or 220V,i will sent correct one to you by your order address. Outside shell is made by aluminum, good quality. P2-1 support power to 12~200ohm headphone. so. make sure your headphone is in this ohm range.About the tube.. each tube for each channel. and the tube will light up when turn ON.because there is a LED under the tube. about the tube itself. inside the tube. also will light up. but just weak light. that's normal.don't worry about that.There are 2 headphone interfaces, there are 6.35 and 3.5,Both interface are in parallel connect.so. if you want to get best sound. don't plug 2 headphones in them at same time. Parameters : Model number : P2-1 input voltage :AC12V frequency response:20 HZ - 20 KHZ input sensitivity 300 mv SNR: 96 db Product size: 103 * 81 * 23mm NET WEIGHT: 380 g Package included: 1 x HiFi headphone amplifier 1 x Peking 6J1 *3 tubes 1 x Transformer. 110V.
B07L5CRQ7T Price: $649.76 Score: 6.061 Category: Electronics Rating: 4 Votes: 18 Find similar products Reisong - BOYUURANGE A20 Hi-Fi Intergrated Amplifier KT88 Tube Single-end Class A 4ND VU Meter. You should take about 30-100h 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. Specifications: Output Power: 8W * 2 (Ultra-linear connection) Frequency response: 20Hz-35KHz Output Impedance: 4,8Ω Total harmonic distortion: ≤ 1% (1kHz) Input Sensitivity: 750MV Input impedance: 100KΩ (three sets of input signal) Voltage amplification: Dawn 6J8PJ × 2. Power output tube: KT88 × 2. Rectifier tube: 5Z3PA-T × 1 Dimensions (W×D×H): 366×300 (including knob) × 185mm SNR: 89dB Weight: about 16.5 kg (114 power transformers, export version) Gross weight: 18kg Power Supply Voltage: AC 110V-120V/50Hz-60Hz(For United States） Features: With power tube current monitoring circuit, tube replacement upgrade ease. Medical grade 5Z3PA-T rectification. Imported 0.35 core output amplifier audio dedicated core, core stack thickness 86-50, A20 flux of 13,000 Output transformer potting techniques, ensure that the output of the amplifier stability and reliability Double chassis design，not easy deformed. Output amplifier with a new imported 0.35 core manufacturing, high-purity copper wire package enameled, layered segmentation, string and connection method Imported 0.35 thick core manufacturing power amplifiers Output amplifier with high-grade stretch amplifier housing cover. Power Transformers: new imported 0.35, stack thickness 60MM (114-60). Output amplifier core: core 0.35 new imported thick high silicon (86-50). Japanese production of ALPS potentiometer. Chassis: mirror stainless steel chassis.	B07TZX1YB8 Price: $19.79 Score: 5.988 Category: Electronics Rating: 5 Votes: 1 Find similar products 2x100W TPA7498 High Power Dual Audio Stereo Digital Amplifier Board for Home Theater Active Speaker. Premium Quality 2x100W TPA7498 High Power Dual Audio Stereo Digital Amplifier Board for Home Theater Active Speaker Descriptions: 100% brand new and high quality Feature: TDA7498 is a 100 w + 100 w class D audio amplifier. The IC chip adopts the single power supply, mainly used in home theater and active speakers. The naked cooling pad up TDA7498 adopted EPU hyper-threading encapsulation. Using differential input to reduce common-mode noise significantly. It has the pattern of the fault and silent mode. With intelligent protection and overheating protection function. Amplifier Board only, other accessories demo in the picture is not included! Specifications: Item Type: Amplifier Board Size: 110x64x22mm/4.3x2.5x0.8in Input Voltage: DC14-32V Output Power: 100Wx2 Output Resistance: 4-8ohm Line Type: D types Chip: TDA7498 Harmonic Distortion: Po=1W/0.05% Frequency Response Range: 18-100KHZ Switching Frequency: 360KHz Signal to Noise Ratio: 110db Color: As shown in the picture. Quantity: 1 Pc Notes: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 x Amplifier Board.
B00NKWV0IQ Availability: Currently unavailable Score: 5.952 Category: Electronics Rating: 3.8 Votes: 8 Find similar products SMAKN LM386 Audio Amplifier Module 200 Times 5-12V 10K Adjustable Resistance. Product Name : Audio Amplifier Module; Chip : LM386 Magnification Times : 200; Power Supply : 5-12V PCB Board Size : 41 x 13mm/1.6 x 0.5 (L*W); Material : Electric Part Net Weight : 5g 1. Onboard LM386 Chip.With 200 multiplier benefits circuit design 2. On-board speaker wire holder 3. On-board 10K variable resistor, you can adjust the Amplification volume. 4. Onboard power indicator, the main feet of the chip has been leaded, can input audio signal directly . 5. Operating voltage: 5 ~ 12V Package Content : 1 x LM386 Audio Amplifier Module.	B00AZTWGDU Price: $10.55 Score: 5.917 Category: Electronics Rating: 4.5 Votes: 28 Find similar products 20db Balanced XLR Attenuator. In-Line Balanced XLR Attenuator - 20dB Ideal for all types of prosound interface applications, this device connects in-line with the line level signal and provides fixed 10dB attenuation. Male - female connections Nickel plated contacts 4 length Fully pivotal 1 mylar dome tweeter.
B001DF4GME Availability: Currently unavailable Score: 5.917 Category: Electronics Rating: 3.6 Votes: 14 Find similar products C2G/Cables to Go 40428 3.5mm Stereo Audio Isolation Transformer. Every installation technician has faced it or soon will - the dreaded humming from the speakers, a telltale sign of a ground loop. Ground loops are caused by voltage potential differences at the ground point on your equipment. Voltages in the range of microvolts up to millivolts or higher can cause ground loops. Ground loops occur when multiple audio/video components are powered from different outlets, most commonly, outlets that are tied to different circuitbreakers or even a different secondary from the power transformer. Ground loops manifest themselves in the form of speaker hum. Our isolation transformer easily connects into your audio/video system and breaks the ground path through cables between components. Start at the component last installed before the ground loop was discovered, and connect the isolation transformer at different ends of the audio/video cable until the ground loop is gone. Gold-plated 3.5mm stereo jacks. Please Note: While this transformer is designed to eliminate ground loops, isolating the source of the ground loop can be very difficult even for professional technicians. Sometimes the problem can be at the last added component or at the furthest from the main system; however, these might only be symptoms of a harder-to-solve problem. Please exercise patience as you work through test scenarios to eliminate your ground loop issue.	B0757HLYDF Availability: Currently unavailable Score: 5.917 Category: Electronics Rating: 3.7 Votes: 13 Find similar products Nobsound Little Bear P7 Class A SRPP Pure Vacuum Tube Headphone Amplifier; Pure Tube Preamplifier Audio Preamp; Dual-Headset Out, Black, SMPS (Switching Mode Power Supply). .