These are highly modified Dayton Audio B652's budget audiophile speakers. Read the reviews on the web. The speakers are good for the money. However, when the stock particle board cabinets are substituted for hand made 3/4" thick maple ply cabinets, a 1% polyfilm audio grade cap replaces a no name Chinese electrolytic cap, gold binding posts replace spring clips and acoustic stuff brand fill replaces 1" thick polyester batting, the speakers become audiophile stand outs! These speakers were finished in bright red to match Sarah's bright red & maple wood amp. (photo below)
Yuan Jing TPA3116 2.0 "black board". Board mounted on neoprene isolators. Gold plated, insulated five way binding posts. Gold plated RCA connectors. Solid, brushed aluminum volume knob. Nickel plated, vintage style toggle switch. Teflon coated, twisted, solid core copper wiring. WBT silver solder. Real maple wood veneer with burned logo. The wood is coated with a clear matte acrylic. A highly regarded Alps Blue Velvet pot was used in this build. The aluminum chassis is untreated and can be periodically polished or let go for a natural patina. Elastomer isolation feet on the bottom.
Another 3116 version 2.0 amp built with the incredibly transparent VALAB brand stepped attenuator. Only two Japan made KOA 1% tolerance resistors in each incremental step. Incredibly transparent. This amp employs the side mounted power input and switch allowing for incredibly short wiring. The circuit board is also oriented within the chassis to minimize the length of all connections. This amp has the word "Fleawatt" burned into the real wood veneer. A clear matte acrylic protects the wood. The rest of the chassis is hand brushed and unfinished die cast aluminum for a industrial look. Keep it polished up or let it go for a natural patina.
This amplifier was built with sonics as a priority. Everything was laid out for the Shortest Signal Path possible. Internal wiring can act as antenna, picking up radio frequency interference & electrical magnetic interference, which can add distortion to the delicate original signal. The shorter the length, the better. My favorite volume potentiometer, a VALAB stepped attenuators, using made in Japan 1% tolerance KOA resistors was used in this build. Only two audiophile quality resistors in the signal path. This hand made volume pot is the most open and transparent I've heard. I sprung for the $40 a pair WBT style gold plated, solid brass binding posts. These are very heavy, solid and I believe contribute to the excellent sound of this amp. The DC power connector and switch were placed on the side, which keeps the power bus wiring to be less than two inches in length. The circuit board is suspended from the top of the chassis on neoprene washers for additional isolation. Elastomer isolation pads adorn the bottom plate. The chassis is a die-cast solid aluminum with a natural, brushed finish. There is no clear coat on it for a natural aluminum patina. A solid aluminum volume knob and Fleawatt placard finishes it off.
15 watt per channel TPA3116D2 Class D amplifier. Solid Die-Cast aluminum chassis coated in textured enamel paint. Two coats of gloss clear coat enamel. Antiqued brass faux "steam power" gauge. Weathered look brass power switch and matching brass accent "rivets" on top. Gold plated five way insulated binding posts. Gold plated RCA connectors. Wired with teflon coated, twisted solid copper wire & WBT silver solder. Elastomer isolation feet. Circuit board is mounted on neoprene isolation washers for maximum vibration dissipation. Comes with high quality 12Volt/5amp external power supply.