Audiophilepure

K11 R2R has a well-thought-out back panel for the price, housing a variety of inputs and outputs, including USB, optical, and coaxial inputs alongside 4.4mm, 6.35mm, and RCA outputs. This assortment of connections makes K11 R2R ready to pair with a broad array of sources, from consoles (thanks to UAC1) to phones and computers.

There are some practical design choices here as well; thanks to the big and wide silicone anti-slip pad, the device stays firmly in place, while the RGB logo lighting on the top lets you know the sampling rate with a quick glance. The illumination is pleasantly uniform and easy on the eyes.

Once again Jeff Wells has shown that he can make a great amplifier whether solid-state or tube, and the Wells Audio V8 Level II Tube Headphone Amplifier has proven to be one of the better OTL amplifiers I have heard, with excellent detail, solid imaging, a linear tonal balance, a large soundstage, fantastic dynamic range and above all musicality. It works well with a broad spectrum of headphones, bringing out what that headphone does best.

Like most OTL amplifiers, the V8 is not particularly forgiving of source working best with high-resolution musical DACs rather than analytical DACs. What you put in is what you will get coming out, in that sense the V8 does exactly what a reference amplifier should; alter the sound as little as possible while providing dynamic range and sufficient power and damping to drive any headphone.

The Headonia 300b logically uses 300b power tubes, and it combines it with 6SN7 input tubes, delivering 7W of power, driving even the most power-hungry headphones. The Headonia 300b of course has a low and high gain setting, but I hardly ever needed that. More on that later.

Here are some of the Headonia 300b features:

The power supply inside the Headonia is designed to provide a staggering 1000 times less ripple than standard PSU units. Complemented by amorphous double C core output transformers, meticulously tuned input and output impedances ensure optimal performance

Once again Jeff Wells has shown that he can make a great amplifier whether solid-state or tube, and the Wells Audio V8 Level II Tube Headphone Amplifier has proven to be one of the better OTL amplifiers I have heard, with excellent detail, solid imaging, a linear tonal balance, a large soundstage, fantastic dynamic range and above all musicality. It works well with a broad spectrum of headphones, bringing out what that headphone does best.

With the full reprogramming of ERCO’s software in combination with crucial changes in the analog circuitry, we are introducing a newer and better ERCO. The ERCO Gen 2 will bring our entry-level DAC one step closer to the performance levels of WANDLA, our flagship converter.

DAC-wise the ERCO 2 still features an ESS Sabre ES9028PRO chip but it now allows PCM up to 768k@32bit and DSD up to 512 (22.6 MHz / 24.6 MHz). For the full sample rate overview, check out the technical specs below. The ERCO 2 does render MQA for those who believe in and like to listen to the format.

The ERCO sports ultra-wideband ICs and according to Ferrum they’re fine-tuned for audio use to achieve the best possible analog quality. All digital ports are optimized for audio, MQA decoding and rendering is optimized for use with internal ARM chip. The signal path in this device is truly balanced