Capacitor


Dear friends I am interested to upgrade my caps in the tube preamp from Audio theta tin foil 3uf200VDC to Miflex1uf 240VDC copper foil what are your thoughts will reducing the value to 1uf affect the bass and frequency response or should I go with a higher value than 3uf  
128x128jasbirnandra
There are a bunch of very good caps ,I have over 20 years between electronics ,and Loudspeakers , I have  Vh Odams in a dac. And in a speaker ,very good capacitors . Millflex copper paper poly oil caps very respectable .
but, I find Jupiter copper foil caps outstanding in image depth tone and Bass not perfect but very good on top , the best bypass capacitors higher then 100 volts 
Are without question the VH audio CU -Copper Teflon caps which are VH Audio best capacitors .I mixed roughly 2+% ,to the Jupiter
copper foil coupling caps in the preamplifier ,A great combination now it is open airy and have excellent precision as well as very natural musicality .
personally I like better then  any capacitor out there including Duelund .
everyone has a opinion but unless you have tried this combination ,you are missing a special combination.
I’ve committed to ODAMs so Jupiters are not in my future, but @jasbirnandra may be interested as he said he is going Jupiter.

I’m now pondering sizing the bypass. I see suggestions of 0.01uF and also 1% to 2%, which would be 0.033uF to 0.068uF.

I’m a "go big or go home" person, so I’m considering trying a single pair of 0.068uFs. If the sound gets a little zippy, I’ll leave the 2nd pair of ODAMs un-bypassed.
Dear gentlemans : Seriously and in good shape. Next item is a trusty " best boutique cap, it's the boutique cap of the caps " to enhance any room system MUSIC enjoyment and with several advantages over any an all those caps and permits that you tailored the MUSIC natural color you want it and with very low added distortion levels.

It comes not from a new comer manufacturer but from an experienced one, with high engineering levels, excellent QC and the item has very high quality performance.

We can't go wrong with:


https://www.klarkteknik.com/product.html?modelCode=P0ACA

here its specs in page 6:

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In the past I owned items coming from this manufacturer and I will buy again.


Have fun and be truly happy.


R.


@audioman58  I had for 3-4 months a Coda amplifier and are really good, unfortunatelly a manufacturer with low profile but very good one.


Technical Specifications Inputs Type Electronically balanced (pin 2 hot) Impedance 20 kΩ Maximum input level +22 dBu Outputs Type Electronically balanced (pin 2 hot) Minimum load impedance 600 Ω Source impedance <60 Ω Maximum output level +22 dBu into >2 kΩ Performance Frequency response ±0.5 dBu 20 Hz - 20 kHz relative to signal at 1 kHz EQ out ±0.5 dBu EQ in (flat) ±0.5 dBu Distortion (THD+N) < 0.003% @ 1 kHz +4 dBu Dynamic range >114 dB (20 Hz - 20 kHz unweighted, ±12 dB range) Overload indicator +20 dBu Gain control -∞ to +6 dBu Equalisation 30 Bands Centrefrequencies To BS EN ISO 266:1997 25 Hz-20 kHz, 1/3 octave tolerance ±5% Maximum boost/cut ±12 dB, ±6 dB High pass filter slope 12 dB/octave Low pass filter slope 12 dB/octave Notch filterattenuation >17 dB Notch filter response Q=32 Terminations Audio 3-pin XLR and 6-pin Phoenix-style Power 3-pin IEC Power Requirements Voltage 100 to 240 VAC, 50 to 60 Hz Consumption <60 W Dimensions Width 483 mm (19.0") Depth 228 mm (9.0") Height 133 mm (5.2") Weight Net 5.8 kg (12.8 lbs) Options Input and output balancing transforme.