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World Designs offers two integrated amplifiers, both with five relay-switched inputs, a tape output and a high quality volume control. Choose between
the easier to build KEL84 integrated (15W) or the more powerful KT88 model (35W). Both are available with our XL upgrade option which adds audiophile
components where they matter most. Our designs use auto bias for ease of set up and long valve life. For full technical details of our standard and XL
versions please visit the Support & Forum page. For built versions please visit our Build Service page.
KEL84 Integrated 15W
Our entry level integrated amplifier which punches above its weight and is an ideal low cost introduction to valve amplifiers. This amplifier is powered by the EL84 medium power pentode originally designed by Mullard. This design uses PCBs for the majority of the components for easy build and is just perfect for smaller rooms or efficient speakers. Read the full review in Hi-Fi World May 2012 edition, where it was awarded full marks or see the summary on our Reviews & Gallery page. For those who want the ultimate performance from this amazing amplifier there is an XL option which includes high performance Vishay HT supply capacitors, Schottky Rectifier Diodes for lower noise heater supply, Soniqs polypropylene coupling capacitors and Soniqs ICT interconnect cable for internal audio signal wiring. External dimensions with valves: W301 x D310 x H153mm. Weight: 9kg