I am looking to make the audo louder from my computer to amplifier will this do it? thanks

Not really . . . : A preamp (and this is a preamp) only raises the volume of the signal slightly . . . an amp, or amplifier raises it to levels that can power passive speakers. Active speakers have an amp built in. So, you can go from computer to an amp, or from a computer to powered speakers and don't need a preamp. Or, go from the computer to this preamp, then to an amp or powered speakers. You don't NEED a preamp at all if you have an amp, but you can use one if you want to add a volume knob in between the source and speaker, or want to add a tube pre like this for 'color' to alter the qualities of the sound. Sounds like you want an AMP not a preamp otherwise.

I'm using philips shp9500 headphones. at a maximum of 32 ohms, could i just combine my headphones with this pre-amplifier without an amp? (pc dac)

This is a pre-amplifier, not a headphone amplifier. Headphones like the Sennheiser HD6xx could be used because of their high impedance (600 ohms) at a low volume. The 32 ohm Philips headphones may cause issues with this pre-amp.

Can i use this product from a 3.5 mm headphone jack on a tablet to a rca line input on a stereo receiver?

Yes, you will need to use a cable that has RCA plugs in one end and a headphone plug (1/8") on the other. The headphone plug goes into the tablet and the RCA plugs go into the input of the SUCA-AUDIO. You will use another cable with RCA plugs on both ends. Plug in the RCA plugs on one end into the outputs of the SUCA-AUDIO. The RCA plugs on the other end go into your stereo receiver inputs.

What other tubes can I upgrade this with? Thanks

Get the readily available Riverstone Matched pair 5654W from Amazon, or there are lots of varieties on eBay to try! Voshkod 6j1P's sound amazing in this.

Amplifier Type	Tube
Connector Type	RCA
Compatible Devices	Guitar
Output Wattage	5 Watts
Item Dimensions D x W x H	4.72"D x 3.94"W x 1.38"H

SUCA AUDIO Tube Preamplifier for Home Audio Player Mini Hi-Fi Stereo Preamp with Treble & Bass Control (6K4 Tubes)

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