---SOLD---Core Power Technologies Deep=Core 1800 in excellent condition. Not a mark on it. I am the original owner. Lists for 1295, 420.00 shipped.
When placed in front of any power conditioner / strip, it effectively lowers EMI/RFI very effectively.
At my asking price, I will include a 6' CPT gold power cable or a 3' Pangea Power Cable,. Shipping is included, Pay Pal F and F only. Local pick up in CT.
The reason this review is easy, is because the DEEP=CORE works. Starting with the 5u4g rectifier tube, the faint hum was gone. It was replaced by an inky black background. Simple, easily, measurable, and effective. I assumed that replacing the 5u4g with the 5AR4 would likely reduce hum. Instead to my surprise I was greeted once again with an inky back background. No hum, no hiss, just silence. Of course listening to music sounded great, and I felt like bass was cleaner. To have no audible noise from an 8 watt single ended tube amp with 0 feedback using a 104dB efficient headphone is simply unreal and justifies the DEEP=COREs purchase for me."
Clement Perry with Stereotimes said:
"The DEEP=CORE 1800 lowers EMI/RFI gremlins quite effectively. Offers the biggest bang for the buck we've tested thus far! "
https://www.underwoodhifi.com/products/deepcore-1800
