How will you use the DAC? Your MA2275 has volume control and analog inputs, so seems you don't need that.
Will the source be a computer? If so, the USB-to-SPDIF "module" will be key. I say module because it could be part of the DAC or could be a separate unit. Many people say getting this right should be a priority, including Steve Nugent (audioengr user here) who's the brains (and marketing manager too) for Empirical Audio, that makes one of the best USB converters around - but expensive.
With such a budget you might want to consider the top contenders for such converters: Berkeley, Empirical's Off-Ramp, Audiophilleo with PurePower, BelCanto RefLink. These go for $1-2k in the US. Maybe after adding one of these you decide you don't need to replace your current DAC.
Just a thought. I hope it helps.
Will the source be a computer? If so, the USB-to-SPDIF "module" will be key. I say module because it could be part of the DAC or could be a separate unit. Many people say getting this right should be a priority, including Steve Nugent (audioengr user here) who's the brains (and marketing manager too) for Empirical Audio, that makes one of the best USB converters around - but expensive.
With such a budget you might want to consider the top contenders for such converters: Berkeley, Empirical's Off-Ramp, Audiophilleo with PurePower, BelCanto RefLink. These go for $1-2k in the US. Maybe after adding one of these you decide you don't need to replace your current DAC.
Just a thought. I hope it helps.