Teenage Engineering EP-40 + EP-2350 Ting Limited First Edition I impulsively bought these, but I don't think I can use them... so I'm putting them up for sale. After opening the main unit, I used it for about 30 minutes with USB power. I used the EP-2350 once with batteries inserted. All accessories are included. The protective film on the panel has not been removed. I would appreciate it if you could consider this after understanding the above. https://teenage.engineering/products/ep-40 EP-40 Main Features ● Stereo 12-voice / Mono 16-voice polyphony ● 128MB sampling memory ● Equipped with Supertone subtractive synth engine ● Grid sync loop function ● 9 user-editable projects ● 7 main FX + 12 Punch-in FX ● Pressure-sensitive keys & multi-function fader ● Sampling frequency/quantization bit rate: 46kHz/16bit ● Built-in microphone and built-in speaker ● Powered by 4x AAA batteries or USB-C (batteries and cable not included) ● Stereo input/output (3.5mm jack), Sync input/output (3.5mm jack), MIDI input/output (3.5mm jack), USB-C port EP-2350 Main Features ● 4 types of voice effects: Echo, Echo + Spring, Pixie, Robot ● 4 types of samples that can be triggered directly from the microphone ● Live adjustable effect parameters ● Equipped with a 3.5mm curly cable line-out terminal Size (EP-40): W.176 x L.240 x H.16 mm Size (EP-2350): W.75 x L.90 x H.30 mm Weight (EP-40): 625g Weight (EP-2350): 90g