TRN BT20S Bluetooth 5.0 Module Adapter Discussions | Drop

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TRN BT20S Bluetooth 5.0 Module Adapter

Jul 26, 2019

The soubd quality is just terrible (noise floor, DAC/amp quality). Do not buy.

Jul 26, 2019

Blazing_Black_Beard

Aug 20, 2019

ToxicThe sound quality is not terrible and I have no idea how or why you'd come to that conclusion. It just has a noticeable noise floor if you don't have tinnitus in the lower amplitudes. Fortunately for me, tinnitus masks the noise floor most of the time so it's not an issue. Sometimes I hear the noise floor when my tinnitus decides it wants to be a bit quieter but it's not irritating to the point of wanting to stop listening nor is it intrusive in any way. That doesn't mean that it should be there though. There shouldn't be any noise coming out of these when there's a quiet passage. This would be unacceptable if it weren't for my tinnitus. The sounds that are higher than the noise floor, which is pretty low, I'd say possibly around -83dB (which is around where my tinnitus starts anyway, on a good day) are of good quality. The figures I quote are what I am guessing from what I feel after using tons of audio equipment and finding my own noise floor for my tinnitus over many years, these are not exact or scientific tests by any means. I don't know where you get the idea that the DAC and the amplifier are terrible, as they are not and are actually on par with a lot of the better quality 'wire-between-the-buds' (not truly wireless) Bluetooth adaptors from the likes of KZ and TRN etc. These also easily beat the sound quality of a huge amount of the Truly Wireless ear pods that most ChiFi AND well known brand companies are producing now, if you own a half decent pair of ChiFi or better IEMs that is. There's still no APTXHD, but what do you expect for the entry level Qualcomm Truly Wireles ASIC chips? At least there's AACHD and APTX amongst a few others standards on this Qualcomm QCC3xxx ASIC BT5 implementation. They aren't by any means as good as something based on the flagship QCC 5xxx series ASICs, although there aren't any commercial IEM BT5 adaptors that I'm aware of that use this yet, anyway. It would be nice to have active noise cancelling, or the opposite, a pass-through mode so that BT audio can be mixed with local environmental sounds (a.k.a. monitoring), something that the QCC5xxx series can easily accomodate (not the QCC3xxx series though, unfortunately), along with APTXHD and a ton of other perfect features that would allow all sound to be adapted to every situation, like enhancing local speech whilst filtering noise, or tailoring the response to your ears, similar to what Samsung do with their Adapt Sound™ system on their Android devices to allow a better and clearer listening experience and compensate for any hearing inadequacies by boosting and lowering certain frequencies etc. The BT20 version cannot compare to the TRN BT20s at all. They look identical on the outside, apart from the finish, where the BT20 version is gloss black plastic and the BT20s' are coated in a slightly metallic plasticised paint that looks pretty and doesn't reflect light in a cheap and tacky way like the previous BT20 model does with it's glossy black plastic body. Fortunately that's where the similarities end. They have completely different Bluetooth ASICs that aren't even made by Qualcomm. The TRN BT20s Bluetooth IEM adaptors are easily superior, in a class of their own, far above and beyond the BT20 previous version, which, if I'm correct, have inferior Realtek Bluetooth ASICs which don't support APTX, AAC and many of the other standards that are built right into the Qualcomm line of Bluetooth ASICs.

(Edited)

Aug 20, 2019

Toxic

248

Aug 28, 2019

Blazing_Black_BeardI listened to it in UE-11 Pro. Noise floor is just sooo high. And overall sound quality is so terrible - I couldn't fix it with equalization. So I returned back to wired connection until I find something with decent quality. But not this one for sure.

Aug 28, 2019

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Blazing_Black_Beard

Aug 28, 2019

ToxicI'm going to take an educated guess that you have received a bad batch. There no problem with any spectral equalisation and the only anomaly I can find is with APTX encoding artifacts that affect how single sine waves are reproduced in the higher frequencies. Apart from this, and the noise floor that doesn't go much above my tinnitus anyway, there's not much else going against them. No one is going to listen to single sine waves and again, most people with tinnitus or anyone who listens to music at normal levels isn't going to notice the noise floor anyway. It's not as if it's as loud as the old optical infra-red wireless headphones of 20 years ago. That noise floor was noticeable and it was distracting but it was also at around -40dB +, so that was unacceptable. The noise floor on these is barely noticeable, and imperceptible if playing modern music. If you have more sensitive IEMs than 32 Ohm impedance then then this noise floor might be a bit more noticeable. Again I will reiterate, your IEMs are probably extremely sensitive (16 Ohms or less) for you to perceive the noise floor at a level other than typically imperceptible whilst listening to moderately amplified music or you have received a bad batch of TRN BT20s' with regards to your frequency response issues as no equalisation should be needed. My suggestion is to return them and get a replacement.

Aug 28, 2019

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Toxic

248

Aug 29, 2019

Blazing_Black_BeardI compared it with my wired rigs: Cowon Plenue 1/2/D/V, and even the simplest and cheapest Plenue D outperforms it significantly in terms of sound quality. You do understand that different DAC/AMP/circuitry results in different sound. Now, what exactly is used inside TRN? Some outdated CSR all-in-one codec with mediocre specs at most. And there's no problem with build quality in my unit - the problem is with audio engineering quality in this model.

Aug 29, 2019

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Blazing_Black_Beard

Aug 29, 2019

ToxicTRN BT20s' aren't for golden eared audiophiles like you presumably are. They are perfectly fine for everyone else on the planet with a sub-$50 budget and for that they do just fine. You shouldn't be expecting them to outperform any separate DACs as they aren't even near that high budget or in the same league, these are sub $50 BT adaptors and they outperform most if not all Chi-fi truly wireless buds. You shouldn't be expecting anything less, and you most certainly shouldn't be expecting anything more from these, especially at this ridiculously low price point.

Aug 29, 2019

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