TouchTone 4029 DIY Kit

Marsoni

M251S

$89.00

Get it in 3 business days with 1 day shipping. Friday, May 29

TouchTone 4029 DIY KitTouchDescription: TouchTone is a feedback amplifier system using all six inverters (inverting amplifiers) of a CMOS 4049 chip. Use the inverters in combined digital analog mode. Two pairs are used as variable frequency oscillators (lower and high frequencies) and third pair is used in mixed amplifying filtering oscillating (feedback) mode to play around with the existing pads all over the system. Combining touchable pads in various manners can bring

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Nice pullover 1/4 zip. Quality is pretty decent, the color and fit is really good. Leaves good flex room in the shoulders. The material isn’t to heavy and can be worn with a vest if needed. The only thing about the fit is the sleeve length. I wear in a dress shirt 35”-36” length and this hangs past my thumb.

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Reviewed in the United States on March 18, 2026

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Megh A.

Carnegie, US

★★★★★ 4

Good Product

Size: Small, Color: Navy Melange

Accurate color, not super stretchy but great wear and feel. Sizing is perfect as described. Durable for every day use.

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Reviewed in the United States on February 17, 2026

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Michelle Billows

Louisville, US

★★★★★ 5

Great 1/4 Zip for money

Size: 4X-Large, Color: Black Melange

This quarter zip pullover is a great addition to any wardrobe. The fabric is lightweight, breathable, and does a nice job wicking away moisture, making it perfect for golf or any outdoor activity. The fit is true to size with a clean, athletic look—not too tight and not too loose. The material feels smooth. The zipper is sturdy, and the overall quality is impressive for the price. It also holds up well after washing without losing shape. Nice material, wrinkle resistant and soft. Great for the course, workouts, or even casual wear. Highly recommend!

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Reviewed in the United States on April 8, 2026

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Rob

Omaha, US

★★★★★ 5

True to size and great quality

Size: X-Large, Color: Colony Blue Melange

This shirt fits true to size. It is very soft and comfortable. The fabric is a thinner fabric that can be worn over dress shirts. The quality of the shirt seems to be very good. I have bought these pullovers in multiple colors, and they all seem to be consistent with the quality and size.

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Reviewed in the United States on January 8, 2026

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Matt

Boise, US

★★★★★ 3

Received the wrong size

Size: X-Large, Color: Navy Melange

Seemed and looked like a decent quality shirt. A little lighter weight than I expected. I ordered an XL, but received a Large, which did not fit. Returned it and bought a similar shirt in a different brand.

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Reviewed in the United States on February 13, 2026