It really depends on what you're looking for.
There are a number of digital network streamers that have built-in digital or analog volume control, and the results of using that directly connected to an amplifier can be better than if you insert a preamp into the chain.
But lacking a preamp you will not have as many options to support additional sources, if any. You may find volume control more annoying without a preamp and convenient remote control, or might want other features like balance or EQ or room/speaker correction that isn't found in your streamer of choice.
In addition, preamps can impart their own sonic signature which may be a plus or a minus.
My recommendation would be to first find the network streamer with the hardware and software that provides the quality and user experience you desire, and then decide whether or not adding a preamp will be beneficial.
FWIW we decided to go with Lumin streamers for the hardware, software, and sound.
There are a number of digital network streamers that have built-in digital or analog volume control, and the results of using that directly connected to an amplifier can be better than if you insert a preamp into the chain.
But lacking a preamp you will not have as many options to support additional sources, if any. You may find volume control more annoying without a preamp and convenient remote control, or might want other features like balance or EQ or room/speaker correction that isn't found in your streamer of choice.
In addition, preamps can impart their own sonic signature which may be a plus or a minus.
My recommendation would be to first find the network streamer with the hardware and software that provides the quality and user experience you desire, and then decide whether or not adding a preamp will be beneficial.
FWIW we decided to go with Lumin streamers for the hardware, software, and sound.