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John Baylies wrote:

Here are some details on what the H9000’s latency depends on:

1) What IO you are using

  • Using analog IO will add about 1ms of latency due to the converters.
  • Digital IO will have much lower latency, probably a sample or two.
  • Network audio will add some latency.  For Dante, this is configurable.
  • There is an additional but very small latency due to the internal H9000 audio router, which is 3 samples in and 3 samples out, so a total of 6 samples, or 0.125ms at 48k.

2) The structure of the FX Chain that you are running audio through

  • A single algorithm FX chain, or an FX chain in which the algorithms are in parallel, will add about 1.3ms of buffering latency.  Each additional series algorithm will add another 0.7ms of buffering latency.  So four algorithms in series will add about 3.3ms.
  • The internal FX chain routing compensates for buffering latency, so you will not hear comb-filtering artifacts due to running e.g. 2 series algorithms in parallel with one.

3) Whether any of the algorithms add latency as part of the processing (e.g. a lookahead limiter).

  • We don’t currently have information on the processing latency added by the algorithms.
  • In many cases it will be zero.
  • Reporting and compensating for processing latency where necessary is something we’ll consider implementing in future software versions.

Keep in mind that the H9000 does not have any microphone or Hi-Z inputs.

Hello John, and thank you for the response.  It is much appreciated, and I have read that information previously….but what I am really looking for is the performance of the H9000(R) over USB (internal FX processing aside).  

All interfaces are not created equal…and as we have seen there can be a wide variance between USB implementation and how this translates into real world performance.  As an example, I currently use an RME Babyface with my portable setup.  I can state with confidence that the RTL performance of this interface exceeds other USB 2.0 interfaces I have experience with, and gets very close to PCIe figures….both in ASIO and Core Audio configurations.  Not only that, but RME’s driver stability is exceptional.

I would love to be able to use the H9000 as my main interface in the studio…but if it is unrealistic to expect similar performance from the Eventide, I would like to know before purchase so I can plan out a different implementation (MADI, Dante, or AES).

Thank you!