Best Medium Frequency Transformer Cores

JBL Professional AWC159 All-Weather Compact 2-Way Coaxial Loudspeaker with 15-Inch LF, Light Grey

380 mm (15 in) woofer with Kevlar-reinforced Cone and 75 mm (3 in) voice Coil, 38 mm (1. 5 in) diaphragm Compression driver with patented design and high temperature polymer diaphragm..
Extraordinary clarity for speech, with extended frequency response for music, advanced high-slope crossover network for constant coverage and smooth, natural midrange..
500 watt power handling (average continuous Pink noise) with high sensitivity provides high SPL capability..
300 watt 70V/100V multi-tap (built-in transformer) or direct 8ω low-impedance, 52 Hz – 20 kHz frequency response..

Connect the 6J1 tube pre-amp between sound source and amplifier, it will effectively filter digital flavor, the music and human voice will be relatively good.
Eight 470UF capacitor filter is very clean, excellent power system to no hum, filaments are powered with DC 12V and need to be connected in series in order to reduce noise.
Coupling capacitor is electrodeless electrolytic capacitor with high frequency and low resistance.
Using DC 5.5*2.1 socket and AC 12V transformer, you can also use AC 12V transformer without plug, just need to weld the power cord onto the circuit board.
This kit comes in parts so you can assemble them together by yourself, enjoy the process of building your own tube amplifier.

★EASY START FUNCTION: This premium and highly functional transformer converter has a soft-start circuit is built inside to prevent an inrush current at the starting moment. Home circuit breaker not trip off at the starting moment. It comes with four input voltages selectable: 110V/200V/220V/240V..
★HIGHLY FUNCTIONAL CONVERTER: This CE Certified step-up and step-down AC voltage transformer has the ability to convert from 110V up to 220V or from 200/220/240V down to 110V. (Please note a voltage converter does NOT change the frequency, in another word, what goes in is what comes out, either 50 Hz or 60Hz).
★BEST EFFECTIVE TRANFORMER CONVERTER: Unlike other converters, we have designed this one with 3,000 watts Maximum Load Capacity (MLC), most suitable and cost-effective for devices such as rice cookers, hot water pots, household food mixers, blenders with the Maximum Power Consumption (MPC) between 1050 and 2250 watts..
★QUALITY STABLE OUTPUT CONSUMPTION: This voltage transformer has 100% loading capacity. It has 4 AC outlets including two 110V US standard, one 220V Universal and one German/French Schuko plus one DC 5V USB which makes it work perfectly well..
★100% SATISFACTION GUARANTEED: As a brand, we believe in quality not quantity! We g....

Variable Input Impedance Newly enhanced V3 Variable Valve Voicing LED input meter.
Analog output meter Enhanced ART Tube Technology Automatically switches between instrument and mic preamp.
Wide frequency response (5hz-50kHz) Enhanced OPL Output Protection Limiter Toroidal transformer.

High power Class-AB output stage for clean, controlled output.
Patented tracking downconverter power supply for high efficiency.
Low frequency parametric EQ allows you to boost or cut for custom-tailored sound.
Advanced soft clip circuitry improves headroom and protects woofers.

Please contact us before purchase to confirm this will work with your Motherboard.
CPU only – Heatsink, Fan, and thermal paste not included.
Sockets Supported LGA1151 (Motherboard must support Xeon).
Intel Virtualization Technology (VT-x) Yes.
Processor Graphics Intel HD Graphics P530.