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Co-Create Vintage Pre Amplifier

tunglunglin

New member
I am old fashioned guy. I wish Fosi could design and produce an old fashioned Class D pre amplifier.
On the front: volume control, treble, mid and bass EQ, two UV meters, and switches for inputs and outputs selection, EQ bypass section, balance control. Optional TRS earphone output.
On the Back: four or five sets of RCA inputs, optional stereo LP RCA inputs, two pairs of stereo RCA output, two active Sub woofers outputs (one for the right channel; the other for the left channel)
No need for remote control.
Power supply built in
minimalism looks, large metal box with large sturdy tall feet.
No bluetooth built in
No DAC built in.
 
I couldn't agree more. I can only add that I would like there to be some type of bass management, sending only the low frequencies to the subwoofer output and only the high frequencies to the main channels. I could buy a unit right now.
 
I am old fashioned guy. I wish Fosi could design and produce an old fashioned Class D pre amplifier.
On the front: volume control, treble, mid and bass EQ, two UV meters, and switches for inputs and outputs selection, EQ bypass section, balance control. Optional TRS earphone output.
On the Back: four or five sets of RCA inputs, optional stereo LP RCA inputs, two pairs of stereo RCA output, two active Sub woofers outputs (one for the right channel; the other for the left channel)
No need for remote control.
Power supply built in
minimalism looks, large metal box with large sturdy tall feet.
No bluetooth built in
No DAC built in.
Hello, we have a similar product in development that is preparing to include these features, but we have some questions regarding the four or five sets of RCA inputs. Why are so many inputs needed? Would three be acceptable to you?
 
Hello, we have a similar product in development that is preparing to include these features, but we have some questions regarding the four or five sets of RCA inputs. Why are so many inputs needed? Would three be acceptable to you?
One for streamer; one for CD; one for Vinyl. Three is minimal. I happened to have two CD players with very different sounds, my tuner and cassette deck are still working, I have two thousand LP from the 1970-1990, though not stored at current house. For me, three is minimal and acceptable, four is more comfortable.
 
It looks great. May I ask if it's possible to share your device?
One for streamer; one for CD; one for Vinyl. Three is minimal. I happened to have two CD players with very different sounds, my tuner and cassette deck are still working, I have two thousand LP from the 1970-1990, though not stored at current house. For me, three is minimal and acceptable, four is more comfortable.
 
Harman Kardon HD7325 CD player, NAD C538 CD player, NAD 1300, two Fosi V3 mono, Proton cassette deck, tuner (current not used ), an old Proton D1200 amplifier (current not working). Right now I have no LP player. Also a WiiM pro streaming device.
 
May I ask how the entire audio link is currently connected?
1.Do you have two CD players, one cassette deck, one streaming, and two AMPLIFIER, all located in the same room?
2. What interface are they connected to AMPLIFIER through?
3.May I ask what passive speaker you are currently using?
It may be a bit presumptuous, if possible, would it be convenient to share pictures of your room equipment via private message?
 
Yes I use two CD players as described above. The CD players, WiiM Pro, are currently connected to NAD 1300 preamp, the pre amp is connected to Neohipo switch, the switch choose the pairs of Fosi V3 mono or Aiyima A07 Max (mono mode). The switch also chooses KEF LS50 meta or JBL studio 530 speakers. Temporarily the JBL speakers is disconnected because it does not sounds as good as the KEF speakers.
The cassette deck and tuner are currently in the closet and not used. No plan to add LP players yet, as my LP collection is in my brother’s house abroad.
 
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