Ferrum ERCO, desktop high end just became a thing...
oh, and it’s pronounced ertso, not airco
Similar to a skilled chef who utilizes freshly-grown ingredients from their own garden, we incorporated portions of the acclaimed HYPSOS technology and infused OOR's magic to commence the foundation of ERCO. Afterwards, we combined our accumulated 20 years of expertise in crafting DA converters. And let me tell you, we succeeded. We effectively extracted the finest qualities of our two triumphs and infused them into our new kin, resulting in an impressive addition of DA conversion to the blend.
  • Enabling High-Quality Audio Experience by Removing Obstacles
    Experience the ultimate fusion of flagship Ferrum technology and top-quality in-house developed Digital to Analog conversion with our product. Select from one analog input and three digital inputs for maximum versatility.
  • Exclusive Technology

    Cutting-Edge Technology

    Our top-of-the-line technology is utilized, ensuring that all digital ports are optimized for exceptional audio performance. Our MQA decoding and rendering capabilities are specifically optimized for use with our powerful internal ARM chip.

  • Ideal for premium personal audio use
    Maximize the performance of your preferred headphones by connecting them to either the balanced 4.4mm jack or unbalanced 6.35mm headphone jack outputs, or to powered loudspeakers on your desktop via the XLR or RCA outputs.
  • True Ballanced
    Starting from the early D/A stage, the signal path maintains a genuine balance and attains complete balance through the use of RCA inputs.
  • The design is a hybrid of discrete and integrated circuit components
    The most optimal analog quality can be achieved by employing ultra-wideband integrated circuits specifically optimized for audio applications.
  • Improved clarity

    The entire design is centered around achieving a well-balanced and highly transparent sound signature, which effectively eliminates any listening fatigue that may have been experienced in the past..
  • User friendly
    Enjoy a trouble-free experience with effortless operation. The front panel features just three knobs, making it simple to adjust the essential settings.
  • Ferrum Power Link
    ERCO performs exceptionally well straight out of the box, but its true potential is realized when used in conjunction with HYPSOS. By utilizing our specially designed Ferrum Power Link (FPL), we are able to connect the two and unlock unparalleled musicality from the combination. HYPSOS reaches its full capacity when paired with ERCO, creating a dynamic duo that goes above and beyond.
ERCO, which is pronounced ˈert͡so and derived from the Esperanto word for ore, was chosen as our name. The inspiration for selecting Esperanto came from its inventor, Ludwik Lejzer Zamenhof, who once resided near our offices located near Warsaw. Zamenhof began creating Esperanto during his school years, with a vision of promoting worldwide peace through a universal language that could unite humanity. Similarly, we strive to achieve the same goal through our sincere and authentic approach to music reproduction. Ultimately, our efforts aim to bring peace to the mind.

Marcin Hamerla
Founder and CEO HEM

Unique output cable design: two wires delivering the power and two wires providing the feedback to ensure flat voltage at every moment. We named this technique Ferrum Power Link (FPL) and it eliminates the harmful effects of the cable's resistance effectively improving transient response. The current delivery speed at the powered device's input is significantly improved.
ERCO comes with a carefully selected DC power adapter. To get the most out of ERCO you can connect it with HYPSOS using our proprietary Ferrum Power Link DC power cable. This FPL cable can be ordered separately.

  • Headphone output gain: balanced -5.8 dB, +6 dB, +17.8 dB; single ended -11.8 dB, 0 dB, +11.8 dB
  • Operation: fully balanced, proprietary IC power amp
  • Power inputs: 5.5/2.5 mm DC connector center positive; proprietary FPL 4-pin DC connector (FPL)
  • Analog inputs: RCA (Consumer level; Pro option with future software update)
  • Digital inputs: USB-C (MQA, up to PCM 32-bit/384 kHz, DSD256, DoP128); S/PDIF coaxial (MQA, up to PCM 24-bit/192 kHz, DoP64); S/PDIF optical (MQA, up to PCM 24-bit/96 kHz guaranteed, should work up to PCM 24-bit/192 kHz and DoP64 – depends of user’s optical cable and transmitter)
  • DAC chip: ESS Sabre ES9028PRO
  • PCM sample rates: 44.1 / 48 / 88.2 / 96 / 176.4 / 192 / 352.8 / 384 kHz
  • DSD sample rates: 2.8224 / 3.072 / 5.6448 / 6.144 / 11.2896 / 12.288 MHz
  • MQA: decoder and renderer (USB, OPTO and COAX inputs)
  • DAC resolution: PCM up to 384k@32bit; DSD up to 256 (11.2 MHz / 12.2 MHz)
  • Headphone jack outputs: balanced 4.4 mm (TRRRS); unbalanced 6.35 mm (TRS)
  • Line outputs: balanced XLR; unbalanced RCA (both Consumer level; Pro with future software update)
  • Volume control: analogue with bypass option (bypass for line outputs only)
  • Frequency response: 10 Hz – 30 kHz (+/- 0.05 dB); 10 Hz – > 200 kHz (+/- 1 dB)
  • Output power unbalanced: 300 mW into 300 Ω; 1.7 W into 50 Ω
  • Output power balanced: 1.2 W into 300 Ω; 6.1 W into 50 Ω
  • THD on balanced output: < 0.00018% / -115 dB, 1 mW into 16 Ω; < 0.00018% / -115 dB, 100 mW into 16 Ω
  • THD on unbalanced output: < 0.00032% / -110 dB, 1 mW into 16 Ω; < 0.00057% / -105 dB, 100 mW into 16 Ω
  • Dynamic range analog: 130 dB (A-weighted)
  • Dynamic range digital: 120 dB (A-weighted)
  • Input impedance: 47 kΩ
  • Output impedance unbalanced: 22 Ω on pre-amp
  • Output impedance balanced: 44 Ω on pre-amp
  • Output impedance Headphones: < 0.3 Ω
  • Power consumption: idle <15 W
  • Power adapter: 100-240 VAC to 22-30 VDC
  • Dimensions (W x D x H): 21.7 cm x 20.6 cm x 5 cm / 8.6” x 8.1” x 2.0”
  • Weight: 1.8 kg / 3.97 lbs