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H9000 Support



The vast majority of the H8000's algorithms have been ported to the H9000 as well as all of the algorithms from our stompbox family (i.e. H9 Max) are included.

New FUTURE algorithms is the main reason we created the H9000. The decision to migrate from fixed point DSP to ARM was, in large part, driven by our conclusion that creating new ways to effect sound will be more efficient using the tools available for general purpose processors. The ARM platform also makes porting our plug-ins to the H9000 more efficient.



Yes, if you have the actual source sigfiles. If they are stored on the H8000, they are in a compiled format that we currently don’t have a mechanism for extracting the source sigfile from.


Not scheduled at this time.


Yes, VSig is cross-platform




Not planned. Our remote control program, emote, is a free download and is available as a stand alone app for Mac and Windows and as a plug-in. 



H9000R priced at $4,999 and production is scheduled for early 2019.

Dante expansion card is available now for $999.

MADI expansion card is available now for $799.

Other expansion cards are planned.


Specifically, to accommodate surround sound formats up to 22.2? The currently available H9000 expansion cards for Dante, MADI, and ProTools each support 32 channels. With all 3 expansion cards installed, the H9000 can support up to 128 channels of audio. Each of the four DSP modules have access to 32 channels of audio.


The Eventide Pro Tools | HD Expansion Card retails for $999 and is now available from Eventide Professional dealers worldwide.

“The introduction of the Pro Tools expansion card marks a significant move toward seamless integration with Pro Tools, the industry standard recording platform among top recording and post-production facilities,” stated Patrick Flores, H9000 Product Manager. “In addition to supporting Pro Tools connectivity, H9000 version 1.3 software adds new effects and customer-requested features and supports a newly updated Emote, the H9000’s remote control application.”


We do plan to release a Ravenna expansion card.


We do plan to support AES67.

FX Chains


You currently cannot route the output of one FX Chain into the input of another FX Chain. We are planning on adding this as a feature in a future update.


The current software release does not provide for mixing the outputs of FX Chains. As a result, two or more FX Chain outputs cannot be combined internally. You’d have to route the outputs to an external mixer. We are considering adding mixing functionality in a future release but that project is not scheduled.



The H9000's quad core ARM DSPs reside on modules allowing for possible upgrades as more powerful ARM processors become available.


It’s not exactly a one-to-one comparison because some of the H8000 algorithms are dual core; that is they require both of the DSP chips of the H8000 to run. On the H9000, a single ARM core can run nearly all of the algorithms of the H8000 except for ~20 of the dual core algorithms from the H8000.

Sample Rates


The H9000 currently supports 44.1K, 48K, 88.2K and 96K sample rates.

192K is currently not supported but the H9000’s hardware supports it. We plan to add 192K support in a future software release.

The H9000s hardware doesn’t support sample rates higher than 192K.


When switching to a new sample rate, you should first change the H9000’s sample rate, then change the computer’s sample rate. The audio will be muted if the sample rates don’t match. If you switch the computer’s sample rate first (e.g. by loading a session with a different sample rate), you will have to change the H9000’s sample rate, then change the computer’s sample rate again once the H9000’s clock is locked to the new rate.

Signal Input/Output


No. The H8000 could accommodate a direct instrument connection via its pre-A/D boost/cut capability of +30 dB/-90 dB. The H9000 supports -10 dB / +4 dB. If you’d like to connect an instrument level signal directly to the H9000, you’ll need a DI box.

Software Update


See the USB update instructions in the H9000 manual here.



Each DSP module has its own memory which is shared between the 4 cores. Each algorithm allocates the memory it needs at load time, leaving the rest available to the others. The user doesn't have to do anything to manage the memory. However, you could potentially write a sigfile that would consume enough memory that it would not load under certain circumstances, or prevent other algorithms from loading. The H9000 has much more memory available to algorithms than previous products and we don’t anticipate it being a significant limiting factor.


Sound is everything and the arithmetic matters. The same algorithm running on a 24 bit fixed chip could, with some inputs and some parameter/variable values, give a different result when running on a 32 bit floating point chip. The H9000 development process took over 5 years in part because we made it a requirement that all of our effects, all of their presets ported from the H8000 to the H9000, would sound the same. The task of ‘listening’ to every algorithm with every potential parameter value was not humanly possible - at least not possible for a human listener. Our development team instead created an automated listener - a program that could run each algorithm, make detailed comparisons, and report the results. This automated listener program is ground-breaking and in fact, our developers published a paper and presented it at the audio DSP conference, DAFx 2017.

You can read the paper here.


The H9000's latency is variable and it 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.



Here are some helpful key combinations that may be used at start-up:

Restarting the H9000 while pressing and holding the SESSION and FXCHAINS switches will clear the H9000’s current state. This will not affect your saved sessions or presets. Restarting the H9000 while pressing and holding the SESSION, FXCHAINS and ALGORITHMS switches will reset the H9000 to its factory state. This will delete any sessions or presets you might have saved to the H9000.

It's likely there's a sample rate mismatch between your computer and the H9000. 

When switching to a new sample rate, you should first change the H9000’s sample rate, then change the computer’s sample rate. The audio will be muted if the sample rates don’t match.

If you switch the computer’s sample rate first (e.g. by loading a session with a different sample rate), you will have to change the H9000’s sample rate then change the computer’s sample rate again once the H9000’s clock is locked to the new rate.

This is in the nature of asynchronous USB audio. USB audio devices that use synchronous mode are a lot simpler to use; you just plug them into your computer and they pretty much “just work”. The H9000, however, uses asynchronous mode, which means it might need additional configuration for it to work correctly. It has to use this more complicated mode because it supports many different audio protocols with different possible clock sources.

To change the computer's sample rate:

In Windows 10, navigate to Windows Sound Settings, and then: Sound Control Panel > Recording > H9000 USB Audio Expander > Properties > Advanced. In Mac OSX, navigate to Audio/MIDI Setup, and then: “H9000 USB Audio” Device. If you have created an aggregate device, the sample rate you need to change is still within the “H9000 USB Audio” Device, not the aggregate device.