Adding Volume control to an older preamp


I need suggestions from the group please-

My current system consists of Harbeth SHL5 speakers, Pass Lab 150.8 amp, Audible Illusions Modulus 3 preamp, Denafrips Pontius II DAC, Wiim Pro streamer and Nordost/Monster cables. I listen to a mix of music but mostly jazz and classical I reallyI enjoy my current system.  

I would like some advice from members of the forum as to how to control the volume from my listening chair as the Audible Illusions preamp does not have a remote volume control.

As a quick fix, I recently purchased a remote for the Wiim Pro to control the volume at the streamer but have read that controlling the volume at that point in the chain is not the best.


I have come up with two possible solutions and would like your feedback is to which is the best or is there a better third choice? Also, WAF is not a problem as my listening room is in the basement .

1) I can purchase a Schiit Saga with a remote and use the passive mode. But, will there be any impedance issues placing the Saga between the preamp and the amp?

2) I can move the preamp next to my listening chair and control the volume manually but will need to purchase longer cables. I would need either 14 foot interconnects between the preamp and amp or 14 for speaker cables. From what I have read, shorter interconnects and longer speaker cables is the way to go.

Both solutions will cost about the same. Any advice would be greatly appreciated. 

Thank you in advance.

2tuby

Thank you all for the input!

Im going to go with moving the preamp near my listening chair and purchasing the longer interconnects. If I don’t like it I will purchase the Saga.

I started moving things has night and realized the my Ethernet cable will no longer reach the streamer. The devil is in the details.

 

Not a good idea to use a longer interconnect and Ethernet cable just for the convenience of volume adjustment. I’d rather take the opportunity to get some exercise — or consider the following:

  1. If you keep the Wiim for streaming: It has a ReplayGain setting that lets you normalize volume across albums or tracks. I recall Qobuz only supports track-level normalization, but it still reduces the need for constant volume adjustments. In the Wiim, ReplayGain is applied as metadata and processed with 32-bit precision before DAC conversion, so there’s no audible harm to fidelity.

  2. If you still decide to move the gear closer: Consider an optical-Ethernet setup, which many end users have found effective.

Saga2’s output imp. being 4.7kohm does not mean its output imp. is also 4.7kohm.  I believe all Schiit preamps (not headphone amp/preamp) have a standard 10kohm input imp.

My undestanding of "true" passives is that input and output impedances are generally the same by definition - because there’s literally nothing to transform (ala TVC’s) or buffer between the 2 sides. I think Schiit has made "0 gain" preamp options in the past that still use a buffered output - but the Saga’s passive mode doesn’t appear to do this.

Either way it would probably work fine in op’s case, and he could always switch to active mode in a jam. 

A standard 10K input impedance for the active preamps seems an odd choice; I would expect some sources could have output impedances > 1K? 50K - 100K input is a safer bet. Again though, it probably hardly matterns when most modern digital sources have stout output stages.

A standard 10K input impedance for the active preamps seems an odd choice;

I would agree.  Their HP/Preamp series has 50k ohm input but even the higher-end preamp like Kara/Freya stick with 10k.  Why, don’t know, ask bud dry!

My understanding of "true" passives is that input and output impedances are generally the same by definition

A passive device simply means it has no active gain elements such as transistor, op-amp or tube and operates without an external power supply for amplification. This implies nothing about input and output impedances being equal.  You could look at the "SYS" model, i.e., its input and output impedances are 10k and 5k (max) ohm, respectively.

Lastly, the Saga’s gain (ratio) is 1/2 for SE/Balance in Low-Gain active; and 4/8 in High-Gain active. (Amplification = 20 log(gain) is 0 dB when gain = 1)  It is found the Low-Gain active sounds the best, better than the passive mode with slightly more dynamic/openness without hint of constriction.  In addition, Low-gain tends to have lower THD+N than High-gain, as frequently demonstrated in the measurements.

 

These cheap remote  volume pots just Rob detail Khozmo now makes thin resistor,relay remotes for around $350  night and day better , the cheap $25 alps pots  Just Rob detail are nothing more then a plastic wiper with a conductive 

spray on it.