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Great River Mastermix 20

Great River Electronics MixMaster 20

4.4 4.4 out of 5, based on 3 Reviews

Unit is a 20 channel analog summing mixer

13th March 2012

Great River Electronics MixMaster 20 by jefft

  • Sound Quality 4 out of 5
  • Ease of use 4 out of 5
  • Features 4 out of 5
  • Bang for buck 4 out of 5
  • Overall: 4
Great River Mastermix 20

This unit sounds amazing! More depth and clarity to the mixes. The mic pres alone are worth the price of admission. Everything sounds great through the pre amps and you can dial in as much character as you want. I worked many years on a Neve 8078 and these pres are better. We have a rack of API that I love but in an A/B situation, there is no comparison.

  • 2
22nd November 2012

Great River Electronics MixMaster 20 by asagaai

  • Sound Quality 5 out of 5
  • Ease of use 3 out of 5
  • Features 5 out of 5
  • Bang for buck 5 out of 5
  • Overall: 4.5
Great River Mastermix 20

Features- 4 great pres that double up as line inputs with input/output on all 4 channels. Twenty line inputs with gain/panning each channel, and solo all channels, inserts on the 4 transformer input channels, 4 aux sends on the first 4 transformer channels with separate controls for sends 1/2 and 3/4 on first 4 channels, talkback mike that mutes mix, monitor control with speaker A and B, can monitor mix with 2 buss inserts over mix, can monitor mix without 2 buss inserts over mix, can monitor tape return, mine has a mono monitoring function, usb automation saving for channels get the drift- plenty features.

Ease of Use - This is a unit that fits in a 3 rack size, and so is a technological marvel in what it crams in. But- controlling channels 5-20 with a rotary encoder for pan/level/mute/solo takes some getting used to - and so I give it a 3 for the rotary encoder jiggery for channels 5-20. Otherwise the unit would get a 5 for ease of use.

Sound QualityIf you want a transparent summing unit DO NOT STOP....This unit has transformer thickening at results in a slight thickening and smoothing of the sound....and to my ear causes the high end to be softened/smoothened. These elements are subtle but there. So it takes colour eq that boosts high end like E27 fantastically.

The channels 1-4- if you hit the input gain past 3 oclock it starts really saturating -thick- bit more "grainy" non detailed (this is relative)- bit like say pacifica pad in. I like having the gain control at about 2 oclock and using the output trim to further control the levels. Using the channels 1-4 and turning the gain level to past 3 gets a nice thickening and smoothing - useful for instance to thicken brittle thin vocals etc etc... Channels 5-20 are wonderfully liquid clear in that good non brittle way.

And headroom-HEADROOM-this unit screams headroom and high voltage.

It is fantastically detailed, with a general character of slight thickness and high end smoothness, and in terms of summing seems to give an innate width to the mix. Cannot fault the sound.

Bang for Buck Unit is not cheap, but then it provides a very impressive feature set with absolutely top sonics. Is the most beautifully engineered item in my studio.Given its features and sonics- represents great bang for buck.

  • 1
28th October 2016

Great River Electronics MixMaster 20 by hblu2002

  • Sound Quality 5 out of 5
  • Ease of use 4 out of 5
  • Features 5 out of 5
  • Bang for buck 5 out of 5
  • Overall: 4.75
Great River Mastermix 20

I have owned my mixmaster 20 for about five and half months -- so past the early honeymoon phase. It is an amazing piece of gear and the centerpiece of my studio. I have three metric halo lio-8's -- one with four clean pres, two API 512c's and one great river preamp. Most of the time I use the mm20 pres. lots of gain and zero noise. Does add some character. Love the ease of using inserts when recording on those channels. Also have two meris reverbs as auxes for reverb while tracking. So for workflow it definitely meets my needs. Mixdown is where it shines the most. Thanks to the three ad/da units I can use the full 20 tracks for summing -- it is clearly wider than my itb mixes, clearer and much more polished. I can also add my dramatic obsidian 500 comp for glue and a kush clariphonic to polish the high end. Monitoring is easy including the feedback into the daw (i.e.,tape return). As far as customer service I can't say enough good things about Dan Kennedy. He is accessible, helpful and willing to work with his customers. The unit is very deep and he custom built a cable so that I could safely load it into my mixing desk. So to sum up -- fantastic gear for a studio especially if you want the console sound but don't have massive amounts of space. It is priced appropriately for what you get and I cannot recommmend the unit highly enough!

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