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Douk Audio/Knobsound EQ9 is an nice addition…

Schlippwhip68

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Essex, UK.
I bought this a few days ago ago.
I use it between an CD player and amplifier. The end result is subjective preference of band amplification. It’s clean, no noise at all from the unit itself. I have not tried the included power supply yet as I had an 12v on hand which also does not introduce any noise into my system.
The knobs are plastic but very well scaled to the unit in size. The knobs turn very smoothly but firmly and with a good centre click. The gain is not heavy or too light on each band, it’s very, what can I say, balanced in a sense with no drastic or sudden amplification, again very smooth.
The build quality is excellent, especially given the price of this thing. It’s a very robust metal box.
The RCA’s are fixed quite firm, no excessive movement and 2 in 2 out which is great for adding a second device like a tablet especially if you use an iPad with Apple Music as iOS does not include manual EQ unlike MacOS and the Windows version.

This thing is tiny, super portable, I am used to 32band 19 inch rack EQ and so when I unpacked the EQ9 I was fairly taken back by the diminutive size. Though it is a tiny box it has a good weight to it and will not flip up when cables are attached.
There is a Tone bypass button on the rear which reveals the gain difference from the original source and it does it very well will no electrical pops. Balance knob works perfectly for panning left to right. On-off/Channel selecter knob has a firm and satisfying click.

For the modders out there this little unit has 12 Ti NE5532 op amps inside which are replaceable. I have some Philips NE5532 op amps here which in my opinion are better than their Texas Instruments counterpart, everywhere I have used the Philips version bass has improved with clarity and speed, better instrument separation across the all frequencies.
How the Philips’s will transpire in this EQ is yet to be seen as it’s a single band per op amp rather than a class d amplifier but we will see at a later date.
The opa1656 and 1622 may work very well here to for their clarity but I am not sure if the would fit in and at the current price 12 of those would be expensive. Rubycon caps throughout.

Very pleased with little unit from Douk Audio/Knobsound it’s does a fine job, aesthetically and sonically very clean. This may be a controversial point but after a few hours of use between the Denon DCD-900NE and Amplifer the sound of the EQ9 itself has improved becoming more clear and precise so I would say that although this sounds clean and clear straight out of the box, it will and does get better after a few hours of burn in too.
This is another little win for Douk Audio here in my opinion and the end user like ourselves. This is a handy tool for a lot of use cases including those whom may have trouble with hearing due to age etc. This little unit will tweak those higher frequencies very nicely and possibly allow the hearer to recapture what they may have lost naturally over time. Good stuff!
 

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Hi,

Do you still have it? How is the EQ after a few months of use? Would you still buy it?
I saw some rewiews that say the bypass button is not actually a bypass but amplified the sound a bit. Can you confirm?

I want to put it between a Topping DAC used as a preamp from my Mac Mini and a Fosi Amp that is driving some bookshelves and an active sub. I sometimes feel that the speakers need a bit more mids and for 50-60$ this EQ would be cool to try.
 
Hi,

Do you still have it? How is the EQ after a few months of use? Would you still buy it?
I saw some rewiews that say the bypass button is not actually a bypass but amplified the sound a bit. Can you confirm?

I want to put it between a Topping DAC used as a preamp from my Mac Mini and a Fosi Amp that is driving some bookshelves and an active sub. I sometimes feel that the speakers need a bit more mids and for 50-60$ this EQ would be cool to try.
If a Computer is your source: why don't you use a software PEQ in the first place?
 
I'm having a fantastic couple of days with my Violectic V200, Schiit Modi Multibit, HD650, and the new Nobsound EQ9. The sound is incredibly clean and quiet, and the usage has been immediate from the very first moment!
 
I'm having a fantastic couple of days with my Violectic V200, Schiit Modi Multibit, HD650, and the new Nobsound EQ9. The sound is incredibly clean and quiet, and the usage has been immediate from the very first moment!
Yep, I enjoyed the subtle changes using the EQ9, it’s not heavy handed at all but also very effective. Clean addition to the line.
 
Hi,

Do you still have it? How is the EQ after a few months of use? Would you still buy it?
I saw some rewiews that say the bypass button is not actually a bypass but amplified the sound a bit. Can you confirm?

I want to put it between a Topping DAC used as a preamp from my Mac Mini and a Fosi Amp that is driving some bookshelves and an active sub. I sometimes feel that the speakers need a bit more mids and for 50-60$ this EQ would be cool to try.
The bypass worked as required on my unit, bypassing the EQ9 completely.
 
If of high enough quality (and hopefully containing full bypass) I welcome the return of end user equalization to audio gear - especially for situations when we listen to tracks with compromised musical fidelity. I know I certainly cannot live on audiophile approved audio alone. The Douk EQ9 is priced quite keenly - even below the Schiit Lokius, and offers 7 bands of equalization control - one more than the Lokius. The designers have also chosen the EQ9's frequency bands well - at least for what I would generally find most useful. However I would still rather use fully parametric equalizers since they enable the added flexibility of choosing specific frequencies and Q (bandwidth). My favorite parametric equalizer currently is the rather vintage but extraordinary and versatile Technics SH-9010 which has an excellent thorough and recent review here: https://www.kenrockwell.com/audio/technics/sh-9010.htm
 
Just for clarity here are pictures / renderings of the inexpensive EQs mentioned above:
 

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