BURL B16 B4 4-channel mic / line ADC Daughter Card

The B4 boasts the new BX6 input transformer designed for true MIC/LINE input impedance. The B4 maintains a no compromise, class-A analog circuit, followed by the same ADC we use in the BAD8. Using a single B80 chassis, 40 input channels of audiophile MIC/LINE inputs can be realized. With digital control and SoundGrid or Dante, the B80 MOTHERSHIP with the B4 MIC/LINE daughter card is the ultimate studio grade stage box.

Frequency Response
LINE level, 0dB Gain, -0.03dB @ 10Hz, -1.5dB @ 30kHz
Full Gain, 59dB Gain, -0.03dB @ 10Hz, -2.5dB @ 30kHz
Input Impedance
LINE 10k Ohms
MIC 2.5k Ohms

B4 MIC PRE Daughter Card Features:

• 4-channel MIC / LINE ADC
• 4-channel XLR connectivity
• All class-A, NextGen Analog BOPA14 op-amps
• NEW BX6 input transformers
• 40 total MIC / LINE input channels per B80
• Avid delay matching
• ADC filter select
• Fully balanced signal path for extremely low noise floor

US and EU parcels ship via UPS, ETA 1-7 working days from pickup day zero. That also applies to most locations worldwide.

All shipments are fully insured.

Bigger shipments requiring pallets or custom made crates ship to US, CA, JP, CN, AU and other outside of EU locations via DHL Air Freight, ETA is normally approx. 7-14 working days from pickup day zero.

Big shipments inside EU ship via different freight companies, recently mostly via ACE Logistics. Freight forwarders can use different courier companies for deliveries to final destinations.

Palletising and crating time can vary depending on the size of the shipment and packaging queue. We pack all our shipments with great care.

You are most welcome to pick your order up yourself from our Retrosonic Pro Audio showroom, studio and warehouse in Tallinn, Estonia.

We ship worldwide – contact us for a personal shipping quote or any other questions.

VAT (Value Added Tax) can be deducted if you have a company with a valid EU VAT number or if you're based outside of the EU. Non-EU buyers pay all and any import tax and duty as regulated by their local customs.