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    2. DigiFi No. 22 Balanced Drive Compatible Headphone Amplifier and More Added

    DigiFi No. 22 Balanced Drive Compatible Headphone Amplifier and More Added

    1

    10.00 USD(tax included)

    ／18.00 USD (Excluding tax)

    Sales unit: 1 piece

    Application number: / Manufacturer: / Model number: m86632895141 / JAN code: / AS ONE / NAVIS Product number:

    Application number
    Manufacturer
    Model number m86632895141
    JAN code
    Sales unit 1 piece
    Price 10.00 USD (tax included) / 18.00 USD (Excluding tax)

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    • Additional shipping fees will be charged for this product in Okinawa Prefecture, remote islands, some other areas, and mountain areas. Please note that we may not be able to deliver depending on the region. If we are unable to deliver your order after placing your order, Askul will contact you.
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    DigiFi No. 22 Balanced Drive Compatible Headphone Amplifier and More Added

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    DigiFi No. 22 Balanced Drive Compatible Headphone Amplifier and More Added

    Stock: Slightly

    Delivery date: 2026-07-03 Later
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    58 USD (tax included)

    / 63.8 USD (Excluding tax)

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    Product details

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    Product features
    Category
    Headphone Amplifier / Dac
    Brand
    Olasonic
    Condition
    New/unused
    Shipping
    Included in price (by seller)
    From
    Hokkaido
    Manufacturer name - Brand name -
    remarks [About returns] We cannot accept returns due to customer's convenience.
    Product details (Please note: I will be away from Friday, March 13th to Sunday, March 15th. Shipping will resume on or after Monday, March 16th. Thank you for your understanding.)

    I am listing the Stereo Sound DigiFi No. 22 headphone amplifier with balanced drive capability.

    Additionally, I am including two NC3MXX connectors for making balanced cables, and three operational amplifiers (op-amps) in addition to the one that comes with the unit for testing unbalanced audio output.

    ■Main Unit
    - Product Name: Stereo Sound DigiFi No. 22 Headphone Amplifier with Balanced Drive Capability
    *Note: The Burr-Brown OPA2134PA op-amp for unbalanced output is already installed from the time of purchase.
    - Accessories: Screws for board mounting

    In addition to the above, the following items are included:
    - NEUTRIK NC3MXX Connectors (2 pieces)
    - Color Rings (1 orange, 1 gray)
    - Op-amps (3 pieces): JRC 4558DD, 4556AD, 2114DD
    (These three op-amps were purchased separately by me for unbalanced drive. Separate op-amps are required for balanced drive.)

    Purchased approximately 5 years ago. The contents were opened to confirm them, but the unit has never been used, and I have not had the opportunity to use it since. Therefore, I have decided to list it now. The included NC3MXX connectors, color rings, and JRC op-amps are all unused.

    *Pets: None
    *Smoking: None

    Below is an excerpt from the product's original sales description:

    - Main Unit Dimensions: 75 x 75 x 29mm (Width x Depth x Height)
    - Weight: 55g

    This is an analog input headphone amplifier with switchable input terminals: a stereo mini (3-pole) jack with volume control and RCA terminals. The output features a 3-pin XLR balanced terminal and a 3-pole stereo mini jack. It operates with a 13V boost drive, capable of driving various headphones, and also includes an impedance switching function.

    The op-amp used is Burr-Brown's OPA2134PA, described as exceptionally luxurious for a magazine freebie. In its standard configuration, it only supports unbalanced drive, but balanced drive becomes possible by adding op-amps separately. The unit is equipped with slots for adding op-amps.
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    • DigiFi No. 22 Balanced Drive Compatible Headphone Amplifier and More Added
    • DigiFi No. 22 Balanced Drive Compatible Headphone Amplifier and More Added
    • DigiFi No. 22 Balanced Drive Compatible Headphone Amplifier and More Added
    • DigiFi No. 22 Balanced Drive Compatible Headphone Amplifier and More Added

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