Ableteccom C1 Datasheet -

Almost flat across the frequency range. Output Impedance: Extremely low, typically Power & Efficiency:

No datasheet is perfect. Here is what the Ableteccom C1 datasheet tell you: ableteccom c1 datasheet

Provide a table (example entries):

50kΩ (unbalanced RCA); 100kΩ (balanced XLR). 2. Physical & Build Data Almost flat across the frequency range