The Shenzhen Benjie BJ-T6 / AGPtek Rocker is a full featured digital audio player that offers lossless (FLAC, DSD, etc.) file playback at one of the lowest retail price points in the global market (US$60/EUR50/JP¥6,890.) With a solid and compact metal case, a capable Bluetooth 4.0 CSR implementation, up to 256GB removable storage capacity and a relatively long lived battery life, the T6 is an attractive option for the audiophile seeking an inexpensive portable player with but a few compromises.
SoC: Ingenic X1000 w/32MB integrated LPDDR (http://www.ingenic.com/en/?product/id/9.html)
Bluetooth: CSR 8811 F1C81 AVRCP\A2DP\HID (http://www.csr.com/sites/default/files/csr8811.pdf)
Power Management: AXP192 (http://www.s-manuals.com/pdf/datasheet/a/x/axp192_x-powers.pdf)
Codec: Cirrus CS42L51_F2 (https://www.cirrus.com/en/pubs/proDatasheet/CS42L51_F2.pdf)
Flash: SPI NAND ATO25D1GA (http://www.atosolution.com/product/product01.html#con7)
Partial Performance Parameters for Headphone Output
Output Power 1: 25mW/32Ω
Output Power 2: 46mW/16Ω
Output Impedance: 16-32Ω
MAX output voltage:1V
MAX output current:25mA
The T6/Rocker incorporates the highly rated Hiby player app in firmware. This app is also used by Cayin, Shanling, Eros, Questyle, Hidizs and Tempotec in some of their devices.
The app's feature set includes:
1. All lossless audio formats decoding, including DSF, DFF, ISO, WAV, FLAC, AIFF, M4A, AAC, MP3, OGG
2. CUE sheets also supported
3. High precision decoding with 32 bit output, 64 bit float point and 128 bit internal calculating.
4. External USB DAC is supported with DXD/DoP output for Native DSD or 384KHZ 32 bit audio stream.
5. Gapless playing is supported.
6. 10 band graphic EQ supported.
Shenzhen Benjie BJ-T6 - http://www.benjie-tx.com/MP3HiFiPlayer/224.html
Shenzhen Benjie Technology Co., Ltd. is a Chinese high-new technology manufacturer specializing in R&D, production, sales and service of digital products. Their main products are MP3 players, HiFi Players, sports earphones and digital voice recorders. Shenzhen Benjie has a 2000 square meter plant, 7 production lines, 5 engineers and 10 staff in QC. About 10 to 15 new models can be launched from Benjie every year. They claim advanced production equipment, experienced and qualified engineers and workers, recognized quality control systems, a friendly and professional sales team for to-the-trade pre-sales and after-sales support for prompt production, good quality and reasonable pricing.
Benjie is selling the BJ-T6 in China through their reseller network on AliExpress as well as through various global retailers. You can contact the Benjie support team at the links found here - http://www.benjie-tx.com/contactus.html - to let them know of a problem. As this is a Chinese company, it might be faster to use the Tencent messaging app WeChat, see the bottom of the linked contact page to add them as a contact.
AGPtek Rocker - https://www.agptek.com/index.php/product/agptek-bluetooth-mp3-player-rocker-v2-high-resolution-digital-audio-player-supports-up-to-256gb-black/
AGPtek is offering the "Rocker" through their global Amazon storefronts. As of 2/23/2017, the Rocker is available via AGPtek Amazon storefronts in the US, Japan, UK, France, Italy, Spain and elsewhere. Pre- and post-sales support from AGPtek can be located here - http://www.agptek.com/support/about-us.html
AGPtek has generally offered online availability for user installable firmware updates, product manuals and the like. Their current manufacturing firmware is Version 1.2, which was made available for user download and installation on November 1, 2017.
The AGPtek user manual for their "Rocker" may be viewed/downloaded here:
I highly recommend looking at this manual for additional specifications, features and supported file formats as AGPtek seems to be updating it as updated firmware is released.
The best firmware for your T6/Rocker is likely going to be the one provided by the company that sold you their product, simply because it will be supported by that vendor in case you have an issue - Shenzhen Benjie in China and AGPtek in the rest of the world as it stands right now.
The hardware is the same, you can choose to update and use either company's firmware without issue.
AGPtek has their firmware V.1.2 currently installed on the latest Rocker V. 2 for international distribution and Benjie has their V1.04Beta or V1.08Beta (later manufacturing may have further updated firmware) for Chinese distribution.
AGPtek Version 1.2 firmware was made available for user updating as of November 1, 2017.There is a further update of the firmware to be compatible with a Rockbox player implementation that is dated December 7. 2018.
The AGPtek Rocker's firmware versions look more polished, use a more compact font for more displayed data and use multiple colors to distinguish selected functions in the menu, compared to Benjie firmware. The Benjie firmware that I have has a grayscale menu and is more of a developer version before any eye candy is incorporated. Both Benjie and AGPtek firmware seem to have equivalent audio performance but the AGPtek firmware has an enhanced user interface that makes using the Rocker a more pleasant experience.
Please note that the use of the word "Beta" in the naming scheme does not mean you have a pre-retail release version of the firmware. The use of the word "Beta" has meant that AGPtek/Benjie intends to continue firmware development and refinement coding is still in process until the device reaches end of life in the product cycle. At some point the firmware will likely not include the word Beta, probably meaning that further firmware coding is no longer in process by Benjie or AGPtek.
In comparison, the pre-release firmware version was simply named V1.0 and identified the device as a K1, the manufacturer's working model nomenclature. You can see this in the initial photos I have attached to this thread. If you somehow have a V1.0 firmware installed on your T6/Rocker, then you really should do a firmware update to access the full range of file formats the DAP is capable of playing, as well as some language/menu enhancements.
Updating or swapping firmware on the T6/Rocker is easy but you should have a copy of your original firmware to revert to in case your update fails. While I have personally installed and used all of these firmware versions on my BJ-T6 and AGPtek Rocker devices without incident, I make no claim or warranty that they will load to or work on your device. Using these files is entirely at your own risk! But if you do decide to try them out, post some comments in this thread!
How to update Benjie BJ-T6/AGPtek firmware
To update firmware, just copy the update.upt file you have onto a properly formatted (exFAT) microSD card, insert the card into your powered off DAP, power it on, go to the Settings Menu, scroll to Firmware Update and then activate the Firmware Update function. It will take a minute or so and then the DAP will power off and then power on again with the new firmware installed.
It doesn't matter that you have any other files on the microSD card, I just use the same card that I keep music on.
The T6/Rocker "Firmware Update" function looks for whatever "update.upt" file that you have on the card to do the update. The "update.upt" file name is generic for ALL updates, be sure to have only the one you want to use on the card when you do the update.
I formatted my microSD card using the T6/Rocker's own "Format the Card" function in Settings. If you opt to format your microSD card with anything else, choose exFAT for best compatibility.
I personally use and recommend installing AGPtek's Version 1.2 firmware if you do not have a newer Rocker (or BJ-T6) with firmware Version 1.2 already installed in manufacturing -
You can find AGPtek Version 1.2 Firmware Update 11/01/2017 for download here as well as a version that will be compatible with an optional Rockbox player install -
Prior AGPtek firmware Versions can also be found at the above link.
The following are some notes on prior firmware versions, made available for reference only.
AGPtek ROCKER UPT 1.06Beta Firmware Update 4/12/2017 (not the latest downloadable firmware, but tested and recommended if for whatever reason you cannot get AGPtek Version 1.2)
1. Enables quick search of music or music file by alphabetic sequence under All Songs/Artists/Genres/Albums by holding the right button in music list interface
2. Relocate playlists created by users to Favorite Lists in the main interface and Music>>Favorite Lists
3. Allows playlist file such as .m3u and .m3u8 to be added under Music>>Playlists by music management software such as Media Go (.m3u and .m3u8 file can not be deleted in the player)
4. Strings modified
AGPtek ROCKER 1.0 5 Beta Firmware Update 04/05/2017 (NOT current version, provided for reference info only)
1. Update bookmark list and the quantity limit of M3U list(maximum bookmark list: 200; maximum M3U list: 1000)
2. Update progress bar and wrong time of songs in bookmark after switch songs manually or automatically when songs are playing from the start
3. Update: Keep playing after playing all songs once (Former version: When choose shuffle all songs, all songs will only play once and then stop playing.)
4. Update the languages of player for different countries
5. Hold the up arrow button to back to the main menu when it is in music playing interface
6. Update: the player can not be operated when the screen is off. (Former version: when the screen is off in the list interface, you can press the up/down arrow buttons to scroll up/down)
7. In 12-hour mode, 12:00 pm will shown as 0:00 instead of 12:00
8. Add “All Songs” option under the “Add to Artists/Album List”
9. Support DTS encoding (Note: prior updated firmware had DSD support, this one might extend the type of DSD files supported.)
Download Link for AGPtek Rocker V1.1 Firmware (NOT the latest version, provided for reference only)
http://www.agptek.com/support/download.html (This is the AGPtek Support download page for manuals and firmware updates, it will always be the go-to location for any AGPtek device updates.)
Detail on the V1.1 firmware dated 03/06/2017 -
- Modify the problem that the player cannot scan the memory card automatically in Japanese language
- Decrease the font size for English language
- Add the built-in idle shutdown function(Power off automatically for over 2 minutes without operation, not allowed to adjust)
- Add “Language” under each of the language option(except English)
- Optimize the wrong display of song sequence in music playing interface
The following is a download link for Shenzhen Benjie BJ-T6 V1.04Beta Firmware (NOT the best version, just the last Shenzen Benjie firmware update that I have. Provided for reference only, in case you are curious about Benjie's original manufacturing release)
One of the fun features of the T6/Rocker is that you can install a dual booting BETA version of Rockbox "firmware as an app" port. I have come to prefer the Rockbox firmware app for the great controls and feature set that it offers.
While this is a good tradeoff for enthusiasts that want to get much greater control in how the T6/Rocker functions, the Rockbox app implementation is definitely a work in progress, some features are not enabled and stability is not guaranteed.
Rockbox developers do continue to work on this app port for the AGPtek Rocker. You can check on their progress and get lots of great technical info on the T6/Rocker as well, here -
It is important to again note here that Rockbox firmware continues in active development, check once in a while on the Rockbox forums to see what further refinements are in process. The relevant Rockbox technical discussion can be found here -
Rockbox developer wodz was kind enough to host the work he had done on GitHub and this kicked off further work on a Rockbox implementation - https://github.com/wodz/rockbox-wodz/tree/agptek-rocker
It has taken a while for this app to come to fruition. Unfortunately, AGPtek initially did not deliver required kernel sources, violating GPL, which somewhat delayed development activity. This is not surprising as the kernel is proprietary to the OEM, Shenzhen Benjie, but it was disappointing as many enthusiasts are in the market for a new Rockbox capable player.
AGPtek did subsequently follow through by releasing a BETA version of a Rockbox "firmware as an app" implementation that you can try out.
For owners of the Benjie T6 that shipped with firmware version 1.08Beta, you can use the following file to get AGPTEK v1.2 firmware installed as well as Rockbox -
The latest build of Rockbox for all manufacturing of the T6/Rocker can be found here - https://build.rockbox.org/ - or downloaded directly here - https://build.rockbox.org/data/rockbox-agptekrocker.zip
Each version has some changes that are not going to be fully tested here, so use at your own risk/interest.
Put the .rockbox folder and the firmware update file onto your exFAT formatted Micro SD card, rename the update to update.upt and go to Settings to update. After the update is done, boot into regular T6//Rocker menu and try out the original Hiby designed player to insure everything is mounted properly. After that you can dual boot into Rockbox and enjoy the added feature set.
For historical reference only - Older versions of the T6/Rocker can use the following, but the referenced files are not necessarily going to be the latest and greatest versions.
Here are the two (historical) files necessary to install Rockbox on the T6/Rocker:
Instructions for install:
Take the folder named ".rockbox" and then copy it directly to your Micro SD card.
Next, copy the file update_rb.upt to your Micro SD card as well, and, once in there, rename it to update.upt (Important Note: ALL T6/Rocker firmware updates use this same file name, so if you play around with firmware updates you need to keep track of what version update.upt you have on your Micro SD card.)
You'll now need to choose the Update Firmware menu option in AGPek Rocker Settings. It should upgrade and then you'll have a choice of either Rockbox or the OEM AGPtek Rocker firmware and will have access to some tools, games, etc. as well.
PLEASE NOTE, OTHER DEVICES MAY LOOK SIMILAR TO THE T6/ROCKER :
Benjie manufactures several devices that look the same as the BJ-T6 in that they use the same case, display and five-way rocker switch. The T-series, specifically the BJ-T6/Rocker that is the topic of this thread and now in retail release, as well as the upcoming BJ-T8 due out mid-2017, are considered audiophile devices and are specifically designed for hi-fi/hi-rez, lossless format playback, including FLAC and DSD. They don't have E-book reading, voice recording, FM radio, built-in memory or a built-in speaker. If the device you are considering has one or more of those features, you are looking at one of their consumer grade recorder/players at a lower price point and with a different chip/PCB solution.
As I have been commenting and answering questions about the Shenzhen Benjie BJ-T6/AGPtek Rocker in both the "Obscure Chinese DAPs" and "Benjie S5" threads, I thought it worthwhile to start a new thread that will allow specific comments and critiques from other users as well. I am not an official representative of Shenzhen Benjie or AGPtek, just an early buyer of the BJ-T6 directly from Shenzhen Benjie in China in December, 2016. I have stayed in touch with them for firmware updates that have now enabled the full feature set of this DAP.
Shenzhen Benjie BJ-T6 - http://www.benjie-tx.com/MP3HiFiPlayer/224.html
AGPtek Rocker - http://www.agptek.com/AGPtEK-ROCKER...solution-Lossless-Music-Player-966-126-1.html
The T6/Rocker DAP is now available in the global market and sells for around US$60/EUR50/JP¥6,890. My early units came with only a micro-USB cord - no charger or earphones. Retail packaging includes a user manual.
The DAP has a very solid metal case with some heft and absolutely no flex. This is a device than can survive drop impacts with no more than a paint scratch. You could probably drive a car over it and the case would not deform.
Unfortunately, as solid as the metal casing is, it has notably sharp edges and corners, making the T6/Rocker less than comfortable in the hand and likely to be a wear point in pants or shirt pockets. A case that looks this sharp but that also is sharp is ultimately a poor design choice for a portable music player.
The unit has no rattles when shaken, the PCB is well anchored internally. The physical function buttons are easy to push and have a positive click. The metal case is finished semi-matte with a choice of black or silver finish, both look classy and would not be out of place on an executive's desk.
The T6/Rocker has an on-off button and microSD slot on the left side, up and down volume buttons on the right side, micro-USB port and headphone/AUX jack on the bottom, nothing on the top or rear of the unit. The front has the TFT screen and a five way click selection pad.
The TFT screen has a 128x160 resolution, which really is the low point of this otherwise capable hardware package. The hardware/software can drive a much higher resolution and a broad color gamut (24-bit color plus alpha channels) but the screen can't take advantage of that capability. The screen itself is smooth and shows reflections but that is not really a distraction in use. While the screen is backlit with adjustable brightness, off-axis viewing is washed out. Direct viewing is OK under most lighting conditions.
While the metal casing is solid, the TFT screen material is made of a flexible plastic that bends when pressed, making it somewhat vulnerable to compression damage. The flexibility and bending strength of the screen means that it isn't going to shatter in a drop, but pushing hard on it will possibly damage both the screen and the PCB. Most people damage portable devices by dropping or sitting on them and the construction of the T6/Rocker really minimizes the likelihood of damage from those instances, but it would not be a good idea to carry the Rocker in a back pocket that also has keys in it.
A TFT screen upgrade is the first thing I would recommend for a T6/Rocker successor build. It may be that this screen configuration was selected for a lower power draw, but I would prefer a few minutes less battery life and a nicer visual presentation, particularly as the DAP displays album art.
High resolution visual displays are not what drives most of us to buy high fidelity audio equipment, it is all about the sound!
I auditioned the T6 with Philips Fidelio L2, Grado SR225 and Sony MDR-CD1700 headphones, no IEMs. These headphones are all quite efficient and the T6 drove each of them to acceptable volume levels with no apparent distortion with both Hi and Low Gain settings. I also use Fostex PM-1 MkII monitors that are room EQ corrected and balanced through a Roland/Edirol M-16DX digital mixer for analytical listening and two separate Paradigm and Klipsch 5.1 setups that are EQ corrected and balanced with Audyssey MultEQ though a Denon AVR-2309CI receiver. I generally use a Fluance Fi50 for Bluetooth listening.
No EQ was applied in my initial listening sessions but the T6 has a 10 band customizable EQ as well as eight EQ presets to adapt the output to your preferred sound profile. I am showing 34, 63, 125, 250, 500, 1K, 2K, 4K, 8K, 15K Hz frequency bands and a 6+/- dB adjustment range with V1.04Beta firmware.
Playing well recorded 24BIT/96kHz FLAC and DSD files only, and in comparison with a non-Rockboxed Sansa Clip+ that was being used at the same time, also with no EQ, the sound seemed just a tiny bit rolled off in treble sparkle, bass was more detailed, mids more or less equivalent. I would describe the sound as detailed and neutral but not clinical.
No hiss or noise floor perceived at all in my audition. However, one Head-Fi member and one teenager that I gifted with a BJ-T6 did mention that they heard a noise floor when a track is played and the volume is turned to zero. The noise was not heard when a file was not playing. This may indicate that the amp is turned on only when the unit is playing, thus preserving battery life but also indicating that the amp stage is not sufficiently isolated. Another owner commented that there is a soft "plopping" noise in switching between tracks. These observations have subsequently been confirmed by a few others, so please take that into consideration if you have "golden ears."
| Audio Format|| PCM|| DSD|