NAD D 3020 V2 vs Onkyo A-9150 review
NAD D 3020 V2 review
The D 3020 V2 provides the convenience of wirelessly streaming all your music via Bluetooth. The D 3020 supports even the highest Bluetooth audio quality, aptX, which is becoming increasingly popular due to its excellent sound quality and low power consumption compared to Wi-Fi. The power of these two sides is equal - 30W (8 Ohms). The highly efficient design of the D 3020 consumes less power, requiring only 20% of the power needed by traditional Hi-Fi amplifiers. The D 3020 offers a variety of inputs for your digital and analog sources. There are also analog inputs, including the MM Phono input. This Phono module includes high-precision RIAA correction and Infrasonic Warp Filter. 
Onkyo A-9150 review
It is impossible not to note the opportunity to rediscover the sound of analogue recordings by using the input of the MM phono stage. At the same time, users are offered separate equalizers, displayed on a separate circuit board, a customizable head amplifier, which works in a discrete configuration for MS signals. Great opportunities open up for users with large collections of CD recordings. For this, a unique technology was developed that allows you to clean the signal from high-frequency noise, DIDRC filters, a 32-bit 768kHz DAC are used. 
NAD D 3020 V2 pros & cons
Pros
- Lively and captivating sound
- Flexible feature set
- Small size and high quality workmanship
Cons
- A limited number of inputs of each type
- Phono entry is good but not great
- Poor fit with low sensitivity speakers
Onkyo A-9150 pros & cons
Pros
- The bass remains clearly defined and resilient even at the bottom of the spectrum.
- Gold-plated connectors are spaced far apart, which makes it easy to connect the thickest interconnects
Cons
- No USB input for connecting to a computer
