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The Shenzhen Benjie BJ-T6 / AGPtek Rocker

Discussion in 'Portable Source Gear' started by pjabber, Feb 8, 2017.
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  1. kailashrs
    So I had a look at the spec-sheet of the CS42L51 DAC on the T6 and it appears it supports only upto 24bit/96KHz... So is Benjie blatantly lying about the T6's capabilities? :p
  2. groucho69
    Specs translated from Chinese are notoriously unreliable, just as are marketing materials.
  3. kailashrs
    That may be true, bu they are claiming native DSD256 playback, which is totally out of the question LOL
    govie likes this.
    Let's start off with your unsupported claim that the manufacturer is lying. Please point out where they claim anything but the following, which I cut and paste from their product page found here - http://www.benjie-tx.com/MP3HiFiPlayer/224.html

    5, Support DSD format, FLAC max. 24bit/192K bps
    8, Lossless playback (APE,FLAC, WAV, ALAC...)

    There are three integral elements in the device that can affect decoding and playback, two that are hardware -

    The SoC: Ingenic X1000 w/32MB integrated LPDDR (http://www.ingenic.com/en/?product/id/9.html and ftp://ftp.ingenic.com/SOC/X1000/X1000_DS.pdf ) that claims an internal CODEC with the following specifications:

    – 24 bits ADC and DAC(digital output)
    – Sample rate supported: 8k, 11.025k, 12k, 16k, 22.05k, 24k, 32k, 44.1k, 48k, 88.2k, 96k, 176.4k, and 192k


    The Codec: Cirrus CS42L51_F2 (https://www.cirrus.com/en/pubs/proDatasheet/CS42L51_F2.pdf)

    The CS42L51 is a 24-bit audio CODEC comprised of stereo analog-to-digital converters (ADC), and stereo digital-to-analog converters (DAC) designed using multi-bit delta-sigma techniques. The DAC operates at an oversampling ratio of 128Fs and the ADC operates at 64Fs, where Fs is equal to the system sample rate. The CODEC operates in one of four sample rate speed modes: Quarter, Half, Single and Double.

    And one software -

    The Hiby Player (http://www.hiby.cd/)

    The app's published feature set includes:

    1. All lossless audio formats decoding, including DSF, DFF, ISO, WAV, FLAC, AIFF, M4A, AAC, MP3, OGG
    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.

    Following so far? The manufacturer claims/advertises 24bit/192Kbps and the three components are capable of delivering on that advertising.

    But does it really?

    If you go to http://www.2l.no/hires/ (Lindberg Lyd AS, Oslo, Norway,) you will find a great resource to test just how file compatible any DAP is.

    Why don't you try these and let us know your results. And don't ignore the DSD256 files. The Britten: Frank Bridge Variations performed by Trondheimsolistene is particularly lovely.
    Last edited: Jan 7, 2018
    groucho69 and hqssui like this.
  5. kailashrs

    I am not claiming anything, I'm merely speculating...
    Last edited: Jan 10, 2018
  6. kailashrs
    @PJABBER one more thing... Even if all those formats are supported, none of them mention DSD playback... This means DSD is getting converted to PCM before playback, meaning the DSD playback isn't really native, right? Once again, I'm merely speculating and don't know this for a fact...
  7. nadezhda 6004
    About point 6.
    I've installed v. 1.1 which looks like the first FW coming before v. 1.0.5 for T6 but still the buttons UP and DOWN do not work when the screen is off. In Setting it shows v. 1.1 though after the FW update. Does anybody know the solution to this problem? How to make these buttons work with screen OFF?
    Last edited: Jan 10, 2018
    It has been a while since I used this version but I think the 1.04Beta firmware had that capability. It is not the prettiest version and you lose other functionality but it might work for you.

  9. nadezhda 6004
    Does anybody know how I can contact the AGPtek】ROCKER UPT1.1 Firmware Update(6th, March, 2017) author?
  10. spudmachine
    A few weeks back I sent an email to AGPTek support and they responded pretty quickly. I was actually quite impressed.

    nadezhda 6004 likes this.
  11. nadezhda 6004
    Thanks for the link. Unfortunately this FW did not help to change tracks with the screen off. I cross checked the FW after downgrading and it is1.04Beta now. The most this FW can do is fastforwarding with Left and Right buttons. Up and down buttons do not work with the screen off. How can it be?
  12. nadezhda 6004
    I will write them today.
    Long press to fast forward/reverse, short press to skip to next song, maybe?

    All DAPs have idiosyncrasies that you can either live with or just buy another one that has a different "feature!" :bow::stuck_out_tongue_winking_eye:
  14. alex5908
    I sent them a message yesterday but they ask about Amazon order number.

    Can anybody share Amazon order number for T6 purchase? Another option for those who bought the player at Amazon to send them this message and post their answer here.
    Here's the message to support@agptek.com.

    "I bought Benjie T6 player and updated the player's firmware with Agptek firmware.
    The latest AGPtek Version 1.2 does not allow to change tracks with the screen off.
    I've downloaded v. 1.04Beta from your download site (which was supposed to enable the operation of the player with the screen off) but it did not help. I crosschecked the FW after downgrading and it shows that the player has v.1.04Beta now. The most this FW can do is fastforwarding with Left and Right buttons. Up and down buttons do not work with the screen off.
    Could you please help me with this matter?"

    Sorry if it seems weird to you but please try to help me solve this matter.
    Last edited: Jan 12, 2018
  15. spudmachine
    Hi Alex,
    Well your first problem is that you told them you bought a Benjie, and not an AGPtek :) I'm sure that's why they're asking for an order number.

    I would think it's reasonable for them to say "Well...if you need support for a Banjie, you need to ask Benjie and not us". My understanding is that Benjie is the original manufacturer of the hardware, and AGPtek resell that hardware with their own firmware.

    Also, I assumed that when the screen goes off the device goes into a "lock mode" by design so that you don't press buttons by mistake. Other DAPs have an explicit "lock" function.

    To get the device to respond again, just press the power button.

    So I would think you are not describing a bug, but a feature :)
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