PENON TURBO

The bass performance is spectacular and is one of the highlights of the Penon Turbo, especially considering that the BAs are completely handling the bass! Smooth treble presentation with decent sparkle, well extended and airy treble, impressive imaging and layering. Shell is made entirely out of resin, very lightweight as well. Overall, the Penon Turbo is very well tuned in all departments, backed up with good enough technicalities, and can be further customized with its well implemented tuning switch system.

https://www.head-fi.org/showcase/penon-turbo.26608/reviews#review-33193

Turbo is a V-shaped IEM that can have anywhere from substantial to unreasonable amount of bass. The bass line of Turbo has satisfying thickness, rumble, and decay. Turbo showcases good instrument placement, particularly the depth contrast between closer and further away sounds. This IEM can pull good details in the midrange. Turbo renders all vocals with a pleasing and slightly warm tonality. The treble was also cleverly done, the transients sound crisp.

https://www.head-fi.org/showcase/penon-turbo.26608/reviews#review-32643

The Turbos are extremely cohesive, as fast as their name suggests, and pack a wallop. Bass texture is impressive.
There's a satisfying sense of fullness to the Turbos' midrange.
The Turbos' soundstage width is slightly above average. Imaging is very solid and dynamics are satisfyingly strong.
Resolution is very good.
The Turbos possess a tremendous sense of speed despite their huge bass presence, which will be especially appreciated if you listen to fast-paced music with busy passages.

https://www.head-fi.org/showcase/penon-turbo.26608/reviews#review-32123

The main dynamics of the Turbo are transients, Turbo puts out a nice level of bass. There is truly a complete story here, one that is actually focussed on the tri-band crossover, and tri-band sound tube arrangement. And it is this specific separation that is really the star of the show. Both good at vocals and bass. It was new to me just how the Turbo could perform. The way it does bass sounds, and the character it has for vocals. Of course the treble isn't too shabby either.

https://www.head-fi.org/showcase/penon-turbo.26608/reviews#review-31534

Turbo is not all bass, you gotta remember it's got the Penon name associated with it. It's technical yet musical bassy in performance. It’s after all a true Penon IEM but one with a trunk of funk added to its bass BAs. With a two step bass boost you get something that sounds more like an ISN IEM, specifically the EST50 comes to mind, yes it's very noticeable without it, it sounds like a traditional all BA set, a damn good one. Despite Penon making numerous IEMs. They only have 2 prior BA sets, the Sphere and the Legends. All their others are dynamics, hybrids or tribrids. So it was time Penon introduced a mid range all BA set that had something new going on and that is exactly what the Turbo represents.

https://www.head-fi.org/showcase/penon-turbo.26608/