I am the original owner of this Manley Jumbo Shrimp all-tube preamplifier with RF remote control. The Jumbo Shrimp is the current Manley model and the successor to the Shrimp, with an upgraded power supply and other improvements. It is in classic Manley style, and has upgraded Mullard 12AT7 tubes. The Jumbo Shrimp imparts a nice tube sound to an otherwise solid state system. It has received many strong reviews. This unit is cosmetically unflawed except for scratches on the underside due to after-market footers. The Manley user manuals are available on its website.