Burl Audio BAD8 is an 8-channel analog-to-digital daughter card for the B80 Mothership and B16 Mothership is the result of over 25 years of R&D A/D design experience. Following on the overwhelming success of the B2 BOMBER ADC and the BAD4, the BAD8 employs a next generation analog circuit path and the latest in analog to digital conversion. This is a no compromise design utilizing all class-A, discrete transistor circuitry and the legendary BX1 transformer coupled input. The BAD8 benefits from the new form factor of the BX1 transformer, allowing for more channel density. The BAD8 also boasts the latest analog-to-digital conversion technology giving it great tone with even greater detail and amazing low latency.
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• 44.1k Hz to 192k Hz, 24 bit, 8 channel ADC
• Proprietary, high definition, BURL AUDIO BX1 transformer input
• Next generation, all class-A, discrete transistor signal path with zero feedback, zero circuit path capacitors
• Next generation AD conversion
• Low latency
• 8-channel DSUB connectivity
Are the BAD4 and the BAD8 the same circuit?
No the BAD8 has a modern ADC chip and a slightly modified analog section.
Why did you change the ADC chip? Why didn’t you just double the BAD4?
Though the BAD4 is a proven solution that is loved by many, it has a high latency compared with modern ADC chips. The BAD4 ADC has a latency of 66 samples, which is approximately 1.5ms at 48kHz, 0.75ms at 96kHz. With the emergence of audio-over-Ethernet, and the use of hardware inserts, latency has become more of an issue. It makes sense at this time to reduce the latency in the ADC chip. Though we are still doing final measurements, we can say that the latency of the BAD8 is less than 25% of that of the BAD4.
Will the BAD4 still be available?
Yes, the BAD4 will still be available, unaltered. The BAD4 circuit path is an exact copy of the B2 Bomber ADC. The BAD4 is a proven ADC, with legions of devoted fans. Time and again we have witnessed other companies try and “improve” a product only to have people yearn for the original. For those of you that want to add more channels to your Mothership, and keep the sound the same, or for those who want a knew Mothership with the classic sound, you do not have to worry. We plan on supporting the BAD4 indefinitely.
Does the BAD8 sound even better than the BAD4?
We all know that in the end, which piece of gear has better sound is a very subjective subject. We can say that we believe that in some ways the BAD8 might have a little more detail. The sound is very similar to the BAD4 in that both use the BX1 transformer and pretty much the exact same analog circuit path. We made some minor tweaks to the analog section to best compliment the new ADC chip. The BAD4 has gone through rigorous AB testing over the last 6 years. The BAD8 will be subject to the same testing, and in the end, it will be up to you to decide which one you prefer.
Can the BAD4 and BAD8 exist in the same chassis?
Yes, but if you already own a Mothership you will want to upgrade your Motherboard code to get all 8 channels of the BAD8 to work in each slot. (There will be a minor fee for this.) Also, there will be a jumper on the BAD8 that you can set so that the latencies match. This will increase the delay of the BAD8 so that it matches that of the BAD4.
Can I trade in my BAD4s for BAD8s?
No, your BAD4s already ROCK!
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