Bull V1V IR Pack

YERASOV is one of Russia’s leading music equipment manufacturers. Started in 1988 in the city of Penza, it carefully preserves the legacy of its founder. As for Shift Line, recording impulse responses from guitar and bass cabs has been one of our focus areas for the past several years. We’re particularly interested in cabs which aren’t widely represented on the IR market.

Yerasov cabinets have a unique sonic character and are equipped with speakers from the world’s leading manufacturers (such as Jensen or Celestion). We couldn’t pass up the chance to create some IR packs from Yerasov cabs.

As a result, we’re happy to present the Yerasov Bull V1V IR Pack by Shift Line!
We’ve also prepared a special version of this pack for the Yerasov IRon Cab impulse player. That version is free and is available both from our website and from yerasov.com.

With the Bull V1V IR Pack, you can freely mix any impulse responses of the same format (i.e. the same length and sample rate). Since all IRs are phase-aligned, you don’t have to worry about the typical phase-related problems (such as unwanted comb filtering or loss of low frequencies) while doing so.

Initially, we recorded a large variety of responses from various distances. We then selected the closest ones to the actual cab’s sound to make up this IR pack.

The impulses have been prepared in a way that ensures the most uniform perceived loudness (LKFS by the ITU-R BS.1770 standard). The loudness is -35 LUFS for mono responses and -32 LUFS for stereo ones; minor deviations are possible. We don’t recommend normalizing the files to 0 dB, as it can lead to significant differences in perceived loudness among the impulse responses.
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The Shift Line IR mixes (20 mono and 20 stereo versions) were created by mixing and processing individual IRs recorded from the Bull V1V guitar cabinet. To our ears, those mixes are the closest representation of the cab’s sound. Additionally, the pack includes individual IRs which were recorded by various mics and can be mixed however you prefer. 

The available formats are split into folders as follows:

• The 96k folder includes 96k@24bit WAV files. These are the max resolution versions (HD).
• The 48k folder includes 48k@24bit WAV files (the current industry standard). 
• The 44k folder includes 44.1k@16bit WAV files. This is the classic CD quality format. We recommend using those if your impulse player doesn’t support the 48k or 96k formats.

Each of the folders above has 4 subfolders for different impulse lengths:

• The 500 folder includes impulses with a length of 500 ms. Those are the most precise and “spacious” versions. 
• The 250 folder includes impulses with a length of 250 ms. Such impulses have high precision and medium “space”.
• The 125 folder includes impulses with a length of 125 ms. Those are highly precise but have the minimum amount of “space”.
• The 20 folder includes impulses with a length of 20 ms. Such impulses lack precision but offer the “driest” sound possible.

The files can be used with the following hardware IR players: Shift Line CabZone X, Twin MkIIIS (mono) and Yerasov IRon Cab (mono/stereo).

Once again, high precision doesn’t necessarily mean the best sound. Each of the lengths provided in the pack can produce great results, so try them all and see what works best for you. 

Each length folder has two subfolders:

• The Mics folder contains impulses recorded with individual mics. It has 74 mono files and 37 stereo files in the Mono and Stereo folders.
• The Mixes folder contains IR mixes produced by Shift Line (the Mono and Stereo folders have 20 files each).

You can download the free version to get a taste of the Bull V1V IR Pack. The free pack includes 10 500-millisecond impulses (5 mono and 5 stereo) along with a selection of 20-millisecond ones. The files are in the WAV 24bit 48kHz format and are compatible with the Yerasov IRon Cab (mono/stereo), Shift Line CabZone X (mono) and Shift Line Twin MKIIIS (mono).