Niimbus Ultimate Series US4/US4+/US5/US5 Pro Headphone Amps - by Lake People
Aug 13, 2021 at 4:58 AM Post #798 of 1,248

thecrow

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Is it really worth the cost of trading up from my V281 to a Niimbus?
It’s a luxurious upgrade

Whether it is worth the value depends on your circumstances

More texture, illumination.

More expensive.
 
Aug 13, 2021 at 9:15 AM Post #801 of 1,248

thecrow

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Aug 13, 2021 at 10:21 AM Post #803 of 1,248

vonBaron

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The treble in the US5 Pro is better than in my previous US4, but the advantages end there, the midrange lacks the resolution, separation and air that I had on the US4, the soundstage also seems narrower and the dynamics are worse. If nothing changes after 100h i probably sell US5 Pro and get US5. Despite everything, I am optimistic.
 
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Aug 13, 2021 at 12:14 PM Post #805 of 1,248

fdg

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Some words about the differences between Niimbus US 4 / US 4+ / US 5 / US 5 Pro

The audio circuitry and power supply circuitry is totally identical on all 4 items.
This concerns the inputs (although US 4 offers less inputs), the line outputs, the headphone amps, the power supply.
Nothing is made "cheaper" inside US 5 or US 5 Pro compared to the US 4 or US 4+.
But the market situation for parts is really thrilling in the moment.

These are the differences:
US 4: one unbal. input missing, no remote control, volume control with RK27, no balance control, no Pentaconn socket
US 4+: remote control, volume control with RK168 and 256-step reed-relay attenuator, balance control, no Pentaconn socket
US 5: remote control, volume control with motorized RK27, balance control, Pentaconn socket
US 5 Pro: remote control, volume control with RK168 and 256-step reed-relay attenuator, balance control, Pentaconn socket

US 4 and US 5 will show definetely no sound differences - same circuitry, same volume control
US 4+ and US 5 Pro will also show no sound difference - same circuitry, same volume control
Between US 4/US 5 and US 4+/US 5 Pro there are sound differencs because of differing volume controls

And yes, the law/travel of the volume control between US 4/US 5 and US 4+/US 5 Pro is also differing because ist diffferent technology.

Have fun and enjoy, Fried
 
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Aug 13, 2021 at 12:25 PM Post #806 of 1,248

mitchb

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Very exciting. I wait my US 5 Pro with anticipation. I expect it will be nicer than my Taurus Mk2 which sounds good itself. I am also expecting an Abyss 1266 Phi TC which should be nice. I currently use mostly my LCD4 headphones. Does anyone know how well a Danacable Lazuli Nirvana cable will mate with the Abyss compared to the JPS SC cable?
 
Aug 13, 2021 at 12:40 PM Post #807 of 1,248

m-i-c-k-e-y

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Yeah give it a burn :fire: first...
 
Aug 13, 2021 at 12:46 PM Post #808 of 1,248

vonBaron

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Some words about the differences between Niimbus US 4 / US 4+ / US 5 / US 5 Pro

The audio circuitry and power supply circuitry is totally identical on all 4 items.
This concerns the inputs (although US 4 offers less inputs), the line outputs, the headphone amps, the power supply.
Nothing is made "cheaper" inside US 5 or US 5 Pro compared to the US 4 or US 4+.
But the market situation for parts is really thrilling in the moment.

These are the differences:
US 4: one unbal. input missing, no remote control, volume control with RK27, no balance control, no Pentaconn socket
US 4+: remote control, volume control with RK168 and 256-step reed-relay attenuator, balance control, no Pentaconn socket
US 5: remote control, volume control with motorized RK27, balance control, Pentaconn socket
US 5 Pro: remote control, volume control with RK168 and 256-step reed-relay attenuator, balance control, Pentaconn socket

US 4 and US 5 will show definetely no sound differences - same circuitry, same volume control
US 4+ and US 5 Pro will also show no sound difference - same circuitry, same volume control
Between US 4/US 5 and US 4+/US 5 Pro there are sound differencs because of differing volume controls

And yes, the law/travel of the volume control between US 4/US 5 and US 4+/US 5 Pro is also differing because ist diffferent technology.

Have fun and enjoy, Fried
Oh no! I really liked how my US4 sounds and i don't really like how US5 Pro sound. RK168 is very cheap volume control so why US5 Pro cost so much vs US5?
 
Aug 13, 2021 at 1:11 PM Post #809 of 1,248

Fegefeuer

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Everything that is wrong with summit-fi mentality in one post.

Do you realize how different the actual implementation is or how distinctly different both the volume pots work in the corresponding amps?
 

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