• MHDT Labs

    s-l1600

    MHDT Laboratory Audio Devices R-2R Multibit NOS Tube DACs

    Current drivers, manuals, and information for MHDT Laboratories Audio Devices R-2R (resistor ladder network) NOS (non-oversampling) DACs (digital-to-analog converters).

    http://dhost.info/mhdtlab/

    MHDT Labs USB Drivers (CM6631A)

    MHDT Labs User Manuals (Atlantis, Pagoda, Pagoda Balanced, Stockholm v2, Stockholm V2 Balanced):

    Icon for use in your list of Playback Devices:

    tww2_white_rKw_icon

    Mhdt Labs DAC Family

    Specification

    Havana

    Havana 2

    Stockholm 2

    Atlantis

    Pagoda

    Steeplechase

    USB Input (Max)
    16bits/48kHz
    24bits/192kHz
    24bits/192kHz
    24bits/192kHz
    24bits/192kHz
    24bits/192kHz
    SPDIF Input (Max)
    24bits/96kHz
    24bits/192kHz
    24bits/192kHz
    24bits/192kHz
    24bits/192kHz
    24bits/192kHz
    Output  Format
    16bits
    16bits
    16bits
    20bits
    24bits
    24bits
    Digital Receiver Chip
    CS8414
    CS8416
    CS8416
    CS8416
    CS8416
    CS8416
    USB Chip
    CM102AS+
    CM6631A
    CM6631A
    CM6631A
    CM6631A
    CM6631A
    DAC Chip
    PCM56P-J
    PCM56P-J
    PCM56P-J
    AD1862N-J
    PCM1704
    AK4396
    DAC Chip Construction
    R/2R Multibit
    R/2R Multibit
    R/2R Multibit
    R/2R Multibit
    R/2R Multibit
    Delta-Sigma 1 Bit
    I/V Stage
    Voltage out DAC’s Internal OPAMP
    Current Out Discrete Transistors I/V,  No OPAMP, No feedback
    Current Out AD847AQ as I/V
    Tube Buffer
    Tube Buffer with 5670/2C51/396A
    Output level
    2.6V
    2.6V
    3.0V
    3.0V
    3.0V
    2.8V
    Output impedance
    32 ohms
    32 ohms
    32 ohms
    32 ohms
    32 ohms
    32 ohms
    Inputs Available
    3 Inputs — USB/ RCA/Optic
    4 Inputs — USB/RCA/BNC/Optic
    USB Input Topology
    USB1.0
    USB2.0
    USB Driver: Windows
    Not Needed
    Yes, Needed
    USB Drive: Linux/Mac
    Not Needed
    Dimensions (WxDxH)
    260 x 150 x 60 mm
    276 x 150 x 60 mm
    Dimensions w/ socket
    280 x 170 x 60 mm
    295 x 170 x 60 mm
    Weigth
    1.8Kg
    2Kg
    Box Color Avialable
    Black Only
    Black/Silver Selectable
    Silver Only

    MHDT Threads

    Reviews

    Other Resources

    Tubes

    For now, this is just information from the official MHDT page.

    The burn in time will takes about 1 days for components and about one month for tube.The tube will be a big issue in this process.  The installed tube GE 5670, date coded 1987,  is the last generation of western industry,  the golden tube ages.  In fact is a good tube but need quite a long time to burn in and aging.  The famous tube are all about 1950s’ tube as they were well aging already just need burn in.

    The tube, I will not recommend any since it depends majorly in taste. However, I will say that the western tubes are quite good due to their materials used in making tube and not recommend recent produced tube like Russian or Chinese 6N3 due to wrong materials are used.

    Jiun-hsien,
    Designer of the team Mhdt Labs

    1st Class
    WE396A / WE2C51 (D getter, JW Military version)
    Bendix 6385 (expensive)
    Tesla 6CC42 (D getter, rare but sometimes will show up in the market)
    JJ 6386 (expensive, new production)

    2nd Class
    WE396A/2C51 (O getter)
    Tesla 6CC42 (O getter, rare but sometimes will show up in the market)
    Tung-sol 2C51 (they invent this tube, 1950s, D getter)
    Raytheon CK5670 (1950s, D getter)
    RCA 5670 (1950s, D/Plate 2 supporting rod getter)
    GE 5670 (3 mica structure, mostly 5 stars tube)

    3rd Class (after 1960s)
    GE 5670
    RCA 5670
    Tung-sol 5670
    Sylvania 2C51
    Sylvania 5670 (sometimes marked Mullard)
    RTC 5670
    Philips 2C51

    4th Class
    Russian and Chinese 6N3P, -E, -EB, -EV

    My MHDT Labs Atlantis

    5fb6e460_20160212_131712 Atlantis_2c51

    Drop the Bass