Got the TipTop Audio ONE today, and promised to say what I feel about it...
first... the quality of the playback is really good... 24bit up to 96KHz is definitely hearable compared to the modules working at 12bit output.
One of the nice things is that there is no interpolation going on... no hardwired samplerate... it's the sample rate itself that is changed... this means that the sample data is played back 1:1 ... this also introduce some "aliasing" (in lack of a better word) when playing very slowly simply because the samples play back so much slower and has no interpolation algorithms (it cannot interpolate since the actual sample rate is slowed down... there are no ekstra "sample slots" to interpolate in between... still, it sounds marvelous in my opinion.
There is ONE caveat though that I did not realize until I thought it over... the CV input is NOT 1v/o... the manual states that, but at the same time it say that it is not needed as the module have a quantize mode to give you the 12 equal tempered scales... that made me think that in this mode ONE would track the keyboard, BUT IT DOES NOT! .. .if you think of playing this module from a keyboard, it will NOT fit the 1v/o as the manual state, so many keys play the same note in succession (about 3-4 keys in a row).
ONE was probably made without a keyboard in mind, and more as an audio file player you could use in a modular system without an attached keyboard... you simply choose a pitch, and use ONE to play back a sample in that pitch... if you need to have sequencers or a keyboard play it correctly you would have to use some kind of scaling module to process the 1v/o CV before entering the ONE module.
Luckily for me, I'm not going to be playing this module melodically, otherwise it would have been returned because of this... I need it primarily to play back sampled chords and FX Vocals and Drones for further processing, so being able to just select a quantized pitch is fine with me... when I get a scaler module I might try to see if it's possible to process the CV input for playing it from the keyboard, but it's not an essential requirement for me in any way... the module does exactly what I want from it
... if you need such a sample playback device (for drums/FX for example), then it does sound really good, is easy to use as well. And the fact that it can also be used as a complex LFO at very slow rates makes it interesting in this aspect as well...
One thing more though is that it seems that the ONE module play back in "chunks" of 1024 samples (or was it lower? can't remember)... this means, that if you intend on making LFO waveforms or seamless single cycle audio loops with this, you should keep that in mind... they HAVE TO fit in those "windows" of 1024 samples, otherwise you'd get clicks and pops when the thing loops... this is quite easy to do though if you know how to use a sample editing application, so it does not pose a problem for me either. i bet this has to do with the way you read from an SD card... the ONE is playing back samples live by reading from the card, and it will read in banks of sample data, most likely 1024 samples at a time, and for some reason it play these chunks to the end... it's just the way reading from an SD card works... I once wrote assembly code to read from an SD card, and I remember this clearly.