Niimbus Ultimate Series US4/US4+/US5/US5 Pro Headphone Amps - by Lake People
Dec 25, 2018 at 5:16 PM Post #196 of 1,226
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so i suppose you like GSX MK2 better? Wow you heard mini too nice. What i really like about violectric is reliabilty, great service, Lot of gain settings, balanced from all sources and other good stuff. i bet Headamp amazing too. There is less marketing about american audiophile products, but they all made with passion and love it seems.

You know I’m a sponsor. I try not to interject purchasing direction and I try to give good data on products. I do interject my impressions and opinion on occasion but mostly I try not to.

I will say I do like the GSX mkII. I believe the mini will really make a lot of people very happy. What I like about Lake People - Violectric - Nimbus is exactly what you’ve said and it sounds great. I’m impressed they’ve reached out to smaller and larger budgets and quite well I might add.

Not that other countries don’t or can’t but there is something to be said about made in USA. That said there is a lot of talent in engineering audio products these days. I always look forward to what happens in the near future. Just think, a 2 way communication wrist watch was only in cartoons and science fiction when I grew up.
 
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Dec 25, 2018 at 5:27 PM Post #197 of 1,226

Arniesb

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You know I’m a sponsor. I try not to interject purchasing direction and I try to give good data on products. I do interject my impressions and opinion on occasion but mostly I try not to.

I will say I do like the GSX mkII. I believe the mini will really make a lot of people very happy. What I like about Lake People - Violectric - Nimbus is exactly what you’ve said and it sounds great. I’m impressed they’ve reached out to smaller and larger budgets and quite well I might add.

Not that other countries don’t or can’t but there is something to be said about made in USA. That said there is a lot of talent in engineering audio products these days. I always look forward to what happens in the near future. Just think, a 2 way communication wrist watch was only in cartoons and science fiction when I grew up.
Oh sry my bad, but thank you for honest opinions. Its always nice to hear from impressions from guys who have listened best gear. Cheers.
 
Dec 25, 2018 at 5:43 PM Post #198 of 1,226
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Oh sry my bad, but thank you for honest opinions. Its always nice to hear from impressions from guys who have listened best gear. Cheers.

:) nothing you need to apologize for. I guess I should have said I try not to influence your choice but rather give you data that helps you make your best choice.
 
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Jan 16, 2019 at 4:10 AM Post #200 of 1,226

Fegefeuer

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Since the Niimbus line will be offering a few more entries like DACs for instance in the same form factor/casing I guess sooner or later it should be feasible to also supply units in silver.
 
Feb 1, 2019 at 11:15 AM Post #201 of 1,226

Ragnar-BY

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I was looking at niimbus.de website and saw that output impedance of US4+ is rated as "< 15 Ohm". Is it a mistake, or it`s headphone output really have that high impedance? That "< 15 Ohm" looks strange after a V200 with 0,06 Ohm output impedance and V281 with it`s "< 0,01". If Niimbus output impedance is around 14 Ohm, than how it would perform with my favorite Fostex TH-900 which are 25 Ohm? I believe damping factor is less important for headphones, than for speakers, but still I was hoping to see at least "< 1 Ohm" output.

It would be interesting to know what`s happened with output impedance in Niimbus amps.
 
Feb 1, 2019 at 11:54 AM Post #202 of 1,226

project86

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I'm not sure about the info - if you look at the US4 listing here you'll see that same spec listed for "input impedance". I think there are perhaps some translation issues or something.

Lake People/Violectric has always advocated low output impedance. And the Niimbus amps have a lot in common with the V281 design, which has an OI of .1 ohm for 1/4", or .2 ohm for balanced out. So I can't see it being drastically different on the Niimbus, nor do I hear that from the US4+ I have here.
 
Feb 1, 2019 at 12:08 PM Post #203 of 1,226
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I'm not sure about the info - if you look at the US4 listing here you'll see that same spec listed for "input impedance". I think there are perhaps some translation issues or something.

Lake People/Violectric has always advocated low output impedance. And the Niimbus amps have a lot in common with the V281 design, which has an OI of .1 ohm for 1/4", or .2 ohm for balanced out. So I can't see it being drastically different on the Niimbus, nor do I hear that from the US4+ I have here.

You are correct. We haven’t found a headphone it can’t drive well and with quality performance levels
 
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Feb 1, 2019 at 2:20 PM Post #204 of 1,226

fdg

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Attachments

  • US 4+ Manual 2018-en-2.pdf
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  • US_4_Manual_2018-en-2.pdf
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Feb 5, 2019 at 8:30 PM Post #207 of 1,226
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Hi Jeff,

We were told they shipped on Feb 1. That should put them in our warehouse this week.

Sorry for the delay. We were surprised when we found out from our clients the first 6 or so were shipped from Germany without the remote. If you bought yours from us or Arthur Powers you should have your remote soon. :)
 
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Feb 6, 2019 at 6:16 PM Post #208 of 1,226

buzzlulu

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Question
If the Nimbus is fed an unbalanced signal via the rca inputs does it internally convert to balanced - so as to run true balanced out for headphones?
I have been waiting on the new Headamp GSX mini which will do this (the GAX MK2 does not - Stax amps do) and I was curious if the Nimbus or V281 can do likewise.
 
Feb 6, 2019 at 6:23 PM Post #209 of 1,226

Mediahound

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Question
If the Nimbus is fed an unbalanced signal via the rca inputs does it internally convert to balanced - so as to run true balanced out for headphones?
I have been waiting on the new Headamp GSX mini which will do this (the GAX MK2 does not - Stax amps do) and I was curious if the Nimbus or V281 can do likewise.

I'm pretty sure it's just like the V281, internally single ended and then balanced on the balanced outs.

Here's what Fred says on the topic over the the V281 thread:


The internal signal processing of V281 is unbalanced !
This is the only way to feed unbalanced and balanced input signals and generate balanced and unbalanced output signals.
The line-out circuitry and the headphone amps inside V281 are totally independent from each other and driven by a dedicated circuitry. That means that they will not affect each other.
For example you can feed an unbalanced signal and generate an unbalanced line-out signal and a balanced headphone signal simultaneously.
Or you can feed a balanced input signal and generate an unbalanced line-out signal and an unbalanced headphone signal.
Special function:
There are 4 headphone amps inside V281. These are left in-phase, left out-of-phase, right in phase, right out-of-phase.
They are connected to the 4-pin XLR headphone socket.
Further one phone jack socket is connected to the left and right in-phase signals and the other phone jack socket is connected to left and right the out-of-phase signals.
That means that two SE headphones will be driven by their own amps so there is no impedance mismatch.

https://www.head-fi.org/threads/vio...-durch-balanced.705318/page-249#post-14378632
 
Feb 6, 2019 at 6:26 PM Post #210 of 1,226
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Question
If the Nimbus is fed an unbalanced signal via the rca inputs does it internally convert to balanced - so as to run true balanced out for headphones?
I have been waiting on the new Headamp GSX mini which will do this (the GAX MK2 does not - Stax amps do) and I was curious if the Nimbus or V281 can do likewise.

Yes it converts to a balanced signal path on the output stage
 
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