Check the listing for details. Tiptop Audio Happy Ending Kit - Black. Condition: New. Listed at 129.00 USD. Turn Your 19" Rack into a Eurorack Synth! Ready to build your own custom Eurorack synth? The Tiptop Audio Happy Ending Kit is the perfect place to start. This kit comes complete with an 84HP Eurorack framework you can drop into any standard 19" rack with 3U or more of space to spare (you'll find many to choose from here at Sweetwater), plus it includes a power supply with connections for up to 10 modules. The framework includes a pair of 84HP Z-Rails and a pair of Z-Ears, which accommodate rackmounted and desktop setups. The slim microZEUS power supply is only 4HP wide and includes a pair of ribbon bus boards, providing power to +12-volt, -12-volt, and +5-volt modules, plus it comes with a 1,000mA Ault power adapter to get you going. Just add Eurorack modules, and you're good to go.