Sidebar 1: Specifications
Description: Delta-sigma DAC with optional upsampling, utilizing the AKM AK4191 DSP chip and AKM AK4499EXEQ DAC chip with three transformers, separate power supplies for digital circuits, L and R output stages, and volume control. Aluminum/rust-proof steel chassis with side-mounted heatsinks and "hidden" AMOLED display. AK4191EQ delta-sigma modulator receives digital audio, handles filters, noise shaping, and oversampling. AK4499EXEQ chip handles D/A conversion. OCXO clock. MUSES 8920A JFET input dual operational amplifier for I/V conversion. Technologies employed: ROSE NRA (Noise Reduction Analog) filter, which filters noise in the analog (output) stage and corrects the response at the frequency extremes; ROSE CIM Architecture, short for "Completely Isolated Module" architecture, said to "minimize electrical interference and crosstalk between different audio processing stages." Digital inputs: USB SFP (optical fiber), USB Type-B 2.0, I2S on HDMI, S/PDIF on RCA, BNC, and TosLink (optical), and AES3. Supports PCM up to 32/768 and DSD up to DSD512. Defeatable upsampling up to 32/705.6, 32/768. BNC and SMA external 10MHz clock connections. PCM filter choices: Sharp, Slow, Short Sharp (default), Short Slow, Super Slow, Low Short. Analog outputs: single-ended (RCA) and balanced (XLR). Output level: Up to 4.5V RMS (RCA), 9V RMS (XLR). THD+N, 1kHz, 0dBFS: 0.005% (RCA and XLR). S/N ratio: 124dB (RCA and XLR). Residual noise: 0.3mV (RCA), 0.4mV (XLR). Crosstalk, 1kHz 0dBFS: –124dB (RCA and XLR). Frequency response: 10Hz–20kHz, –0.3dB; 10Hz–50kHz, –1.5dB; 10Hz– 73kHz, –3.0dB.
Dimensions: 17" (430mm) wide × 3.46" (88mm) high × 13" (330mm) deep. Weight: 22lb (10kg).
Serial number of unit reviewed: EBK503CB000073. Made in South Korea.
Price: $5995. Approximate number of US dealers: 150. Also sold online. Warranty: Two years.
Manufacturer: HiFi Rose, 11F, 932 Yangjae-daero, Songpa-gu, Seoul, South Korea. Tel: 82-1899-6042. Web: hifiroseUSA.com. US distributor: MoFi Distribution, 1881 W. Bryn Mawr Ave., Chicago, IL 60660. Tel: (312) 841-4087. Web: mofidistribution.com.
Dimensions: 17" (430mm) wide × 3.46" (88mm) high × 13" (330mm) deep. Weight: 22lb (10kg).
Serial number of unit reviewed: EBK503CB000073. Made in South Korea.
Price: $5995. Approximate number of US dealers: 150. Also sold online. Warranty: Two years.
Manufacturer: HiFi Rose, 11F, 932 Yangjae-daero, Songpa-gu, Seoul, South Korea. Tel: 82-1899-6042. Web: hifiroseUSA.com. US distributor: MoFi Distribution, 1881 W. Bryn Mawr Ave., Chicago, IL 60660. Tel: (312) 841-4087. Web: mofidistribution.com.
