Rogue Audio RH-5 preamplifier-headphone amplifier Specifications

Sidebar 1: Specifications

Description: Tubed/MOSFET line-level preamplifier and headphone amplifier. Tube complement: two 12AU7/ECC82. Line-level inputs: 3 unbalanced (RCA), 1 balanced (XLR). Variable outputs: 1 unbalanced (RCA), 1 balanced (XLR). Frequency response: 5Hz–50kHz, ±1dB. THD: <0.05%. Gain (selectable): 3, 12, 16dB, line level; 48, 58dB, optional phono stage. Power output: 3.5Wpc into 32 ohms. Output impedance: <0.1 ohm (1kHz). RIAA accuracy: ±0.1dB. Phono overload: 40mV. Power consumption: 31W. Power requirements: 115V, 50/60Hz; 220/230/240V, 50/60Hz.
Dimensions: 15" (380mm) W by 4" (100mm) H by 13.5" (340mm) D. Weight: 19 lbs (8.6kg) net, 25 lbs (11.3kg) shipping.
Serial number of unit reviewed: RH-5 0521.
Price: $2495; optional MM/MC phono stage, $400. Approximate number of dealers: 40. Warranty: 3 years, limited; 6 months, tubes.
Manufacturer: Rogue Audio, Inc., PO Box 1076, Brodheadsville, PA 18322. Tel: (570) 992-9901. Web:

Rogue Audio, Inc.
PO Box 1076
Brodheadsville, PA 18322
(570) 992-9901

georgehifi's picture

Not really.
That the output coupling cap is way too small, no bass into any amp that has low input impedance. EG: some Pass and others and many Class-d amps are 10kohm input, and this preamp will roll off the bass with phase shifts early into these.
Unforgivable, that cap should be at least 4 x larger for a pre that cost this much.

Cheers George

John Atkinson's picture
georgehifi wrote:
That the output coupling cap is way too small, no bass into any amp that has low input impedance.

Power amplifiers with an input impedance below 1k ohms are very rare. (Only some, the Jeff Rowland models come to mind.) The Rogue preamplifier will not have a noticeably rolled-off bass if the amplifier's input impedance is 30k ohms or higher.

John Atkinson
Editor, Stereophile

georgehifi's picture

Looking at the measured graph, it's already -3db at 250hz!! into 600ohms.
For optimal performance (no rolloff or phase shift) this pre should state that it need to see/drive amps with at least 33kohm or higher input impedance. otherwise there'd be many disappointed buyers.

Cheers George

mrkaic's picture

"otherwise there'd be many disappointed buyers."

Subjectivists might like this frequency response if told by a high enough authority that the device sounds "artisanal" or something similarly uplifting.

mrkaic's picture

...that this thing is reviewed next to DAC3?