Ferrum ERCO 

DAC, Preamplifier & Headphone Amplifier 

Welcome to the ERCO, which is pronounced ertso not airco. The ERCO was developed by the team at Ferrum by borrowing technology from their world famous OOR headphone amp, using their own 20 years of experience building DAC's and implementing the award winning HYPSOS power supply technology to create this state of the art product. With all of these things combined they have knocked it out of the park. The sound is exactly how you would expect it, honest and detailed with a richness that would go up against the best of the best. All at a reasonable price-point and the ability to take it even further if you want to buy their own HYPSOS Power Supply. Using that together with the ERCOS you will have more detail and headroom than some of the worlds most expensive products. This is on display in our showroom for you to demo today. 

 
ERCO comes with a DC power cable that has been carefully selected by the team at Ferrum however . 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.

Here are the specifications from Ferrum directly:

• ERCO fully balanced headphone DAC/AMP
• Proprietary IC power amp design
• Proprietary optimised-for-audio digital inputs
• Proprietary optimised MQA rendering and decoding for ARM chip
• Proprietary 4-pin Ferrum connector for HYPSOS
• Balanced 4,4mm jack and unbalanced 6,35mm jack headphone outputs
• Balanced XLR and unbalanced RCA line outputs
• 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: 100-240V AC to 22-30V DC
• 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