Since this pedal comes up a lot and since I owned both (as well as the original sansamp) I might as well post some info on the differences and similarities. A while ago I checked the frequency responses of both pedals. I owned the Blonde V2, which is identical to V1 apart from the extra speaker sim button and the difference in taper for volume and gain. On one version it's easier to find the sweet spot for volume while on the other it's easier to dial in the gain. So here it goes: Joyo American vs Tech21 Blonde V2 Bass sweep (min, noon, max). All other knobs at noon iirc. Pretty much identical as far as bass goes, but it already shows that the Joyo has extended range, giving more treble and/or presence in any setting. Mid sweep (min, noon, max). All other knobs at noon iirc. Clearly a big difference: the joyo mid frequency is centered around 400Hz while on the Blonde the mid frequency is centered around 1000Hz. Treble sweep (min, noon, max). All other knobs at noon iirc. It seems like a small difference but I could clearly hear the more extended range and extra presence of the Joyo. Voice/character sweep (min, noon, max). All other knobs at noon iirc. As you can see, the voice/character knob is another mid control, but it comes before the clipping/distortion in the pedal so it greatly affects the voicing or character of the distortion. It determines which frequencies get more (or less) distorted. There's quite a big difference once you get below noon. The Blonde has a fixed mid cut/boost frequency. It goes from cutting 800Hz to boosting 800Hz. The Joyo has a variable mid cut/boost frequency. It goes from cutting 400Hz to boosting 800Hz. There was no setting on the Blonde that could match my favourite setting on the Joyo and this was purely due to the extra presence of the joyo. My favourite setting was something middle of the road: -eq around noon: bass and mid slightly below and treble slight above, -voice and gain between 10 and 11 o' clock. With an additional 12 band parametric EQ I could make the Blonde sound 100% identical. Because of the slightly more muffled tone of the Blonde compared to the slighty more present Joyo, I kept the Joyo and sold the Blonde. Build quality wise you cannot compare the two, the Joyo is Chinese 'junk', but it costs 29 euros while the Blonde costs around 250 euros. In the end I went for tone... Some extra graphs: Tech21 Blonde V2 cab sim on vs off: Blonde vs Joyo harmonics (feeding 110Hz pure sine wave, matching distortion levels): The joyo has slightly more (even) harmonics but I could not hear the difference. By using a mostly 'around noon setting' for most knobs and simply matching the response with a parametric eq they sounded identical. I also compared the harmonics of these to other moddelers: Joyo vs Sansamp original: The sansamp had mostly odd harmonics and sounded allround very harsh to me. I so wanted to like the Sansamp original because it was such a cool looking pedal and it could replace my 4 Joyos( American, British, Acetone, California). From the get go it sounded thin, cold and harsh. I was so underwelmed. But I forced myself to use it for two weeks straight, playing it every day. It had so many knobs and (dip)switches and it's such an iconic pedal that there had to be some good sounds in there. After two weeks and endless tweaking (tbh, after 2 weeks I was still tweaking the thing) my ears had gotten used to the sound and I thought I had some kinda OK sounds. Only then I compared it again to the Blonde, British and the Joyo's and I was once more blown away how good, full and warm they sounded. I traded the Sansamp for a new Squier Vintage Modified Jazzmaster. Best deal ever for me. I love that guitar. But I digress, this was about harmonics: Joyo vs Roland Cube 30x (blackface setting): I really had to crank the gain on the Cube to get distortion levels matched, hence the big amount of crossover distortion? Anyway, the cube generates no low order even harmonics at all. I found it cold, harsh and sterile sounding. Joyo vs Zoom G3 (Twin setting) Similar to the Cube, the Zoom G3 seems to only generate odd harmonics. It sounded bassy but thin and harsh at the same time. Then again, maybe a Twin isn't really known for its overdrive. Maybe a bit unfair comparison. I also compared the frequency response of all the Fender models on my pedals and moddelers: One important difference is that the analog versions (Joyo American, Tech21 Blonde, Tech21 SansAmp) don't roll of the lows below 100Hz as you would typically see in a real amp. The digital versions (Zoom G3 and Roland Cube) are more realistic in this aspect. Another interesting aspect is that the digital modelers... EDIT: see next post for the graphs as I have exceeded the max of 10 for this post. I may also further edit this one for typos as well.