Low gain preamp options
look at the rogue audio RH 5 linestage headphone amp. front panel adjustable gain toggles of 3, 12 and 16db. sounds transparent and very dynamic. love the sound. https://www.stereophile.com/content/rogue-audio-rh-5-preamplifier-headphone-amplifier |
@cat_doorman, This is the preamp that includes all the desired features that you list in your post. btw, I have speakers that have efficiency >2.6%. So i understand the need for controlling gain i.e. Voltage in audio components. It is very important for sound quality. With this preamp, output voltage is adjustable from 0~35 volts. Hope this helps. https://www.decware.com/newsite/ZTPRE.html |
Because I want the option of using some low input impedance amplifiers, I don’t think a straight passive will be a good fit for me.Only valid reason in this case for not using one, but why anyone would want an amp with 2k input impedance is wrong also, as you can’t even use tube preamps into them either! And even solid state preamps that have output coupling caps too small for that 2k impedance, as the bass rolls off if it is. Cheers George |
@georgehifi, not sure where you're pulling 2k from. I have one amp now with 22k input impedance, and there are a some others that I'm interested in at 15k and 10k. I just don't believe in limiting my future options without reason. I also have the bad habit of leaving more than one amp connected to my pre even though I only have one amp powered at a time. Makes for an easier change, but it can present more of a challenge to a preamp. When I finally get around to experimenting with subs (that typically have class D amps) being able to handle multiple outputs simultaneously with a combined impedance under 10k might become more important. My arbitrary maximum of 500ohms would allow 10:1 ratio with two 10k loads in parallel. |
