Penon OC133 Type-C to 3.5mm/4.4mm audio dac/amp for Android or iOS.
These little dac/amp dongles are a little nuggets of the audio chain that serve several purposes.
A simple plug n play device that adds better audio with added power to your phones USB-C functionality. Many a phones now a days, Apple or Android, no long are using the old 3.5mm out so something like this makes a lot of sense if you're using your wired IEMs on the go.
The new Penon OC133 is utilizing a CX31993 dac + MAX97220 pro amplification chip then connected to a smaller 3 inches of a dual OC133 cable material or better known as SPACE cable material in between the USB-C and the 3.5mm or 4.4mm housing which has the chips imbedded inside the housings. The OS133 silver plated OFC material was definitely chosen to add to the sonic qualities of this small efficient dac/amp. What looks like a seamless wired earphone extension has its own sound dac and amp chip to get you greater sonics. A quick google search yields PCM 32bit/384khz sampling rate for the CX31992 Dac.Specs as follows..
PENON OS133 Type-C to 3.5mm Audio/4.4mm Balanced 384KHz/32bit USB DAC AMP Cable Adapter for iOS/Android
Description
CX31993+ MAX97220 Type-C 384 KHz/32bit digital audio USB Amplifier
It‘’s a Type-C digital audio headphone USB adapter PCBA solution.
The built-in CX31993 digital audio codec chip and MAX97220 power amplifier chip support up to 384KHz/32bit sampling rate.
Excellent mobile compatibility for iOS and Android .
The product size is small and the appearance is beautiful.
Specification
Interface: Type-C
Analog Earphone impedance: 32ohm
Decoding rate: up to support DAC 384KHz/32bit; ADC 96KHz/24bit
SNR
@1kHz: 100dB
THD+ N@1 KHz: -93dB
Crosstalk suppression @1 KHz: -55dB
Cable material: 4 shares,single share is 133 cores.Black nylon sheath,OFC silver-plated cable with carbon fiber plug accessories
Cable length: 8-9cm (without plug)
Cable total length with plugs : 3.5mm is about 14-15cm , 4.4mm is about 15-16cm
Available type :
Type-C to 3.5mm Audio
Type-C to 4.4mm Balanced
Extension dongles that are using the same CX31993 chip. What separates this particular variant is that it is using a equally tiny amp chip in the MAX97220pro which seems to be a newer variant of the MAX97220.
Performance.
This dac/amp is about as easy as it gets for function and use. If you find that bigger dongles to be a bit cumbersome to use but want a bit more power and better sonics connected to your phones and tablets. These smaller form dac/amps might be what you're looking for. Trying out the Penon OS133 dac/ amp dongle. I can recognize what the cable material is adding to the more powerful output of the device when compared to your headphone out directly from your phones.
This was tuned with Penon house sound. Musical yet surprisingly detailed. It's got a full spacious rich sound. Which should ring a bell with anyone that owns Penon IEMs. Full bass, forward mids, fairly big stage, which I feel could be the use of the cable material in combination of the MAX97220pro amp chip a smoother listening treble presentation to boot. I would say the sonics leans a bit toward warmth than neutral bright. Vocals and instruments has surprising body, timbre and stage beyond the small sum asked to get one of these @$35 on Penon site. You can’t expect Penon Tail level of detail or power but from this little dongle the power output I would equate to easily double that of my Samsung phones volume output. Easily putting out enough volume for the Quattros at around 50% volume on my phone.
Due to the obvious coloration for its sonics. These are going to be a great match for more neutral and detailed monitors. It is a clear upgrade on the onboard sonics from my phone. No question. A quick plug n play with added amplification with the Penon sound? Ya that is what these are. If you're in need of something simple and easy on the go that will get you better sound and power. These are damn good for the money asked. Not to mention look and feel premium/ weighty. Excellent little device.