> Classifieds > > > Robert Grodinsky Research ( RGR ) Model Four-1HG Preamplifier

SOLD - DEALER AD: Robert Grodinsky Research ( RGR ) Model Four-1HG Preamplifier

Item #649375031
Info: Robert Grodinsky Research ( RGR ) Model Four-1HG Preamplifier

Asking Price:
CAD $200.00
Retail Price: CAD $800.00
Payment method: Cash, Visa, Mastercard, Paypal, Cheque, Money Order, Money Wire, Interac/EMT
Shipping weight: 11.34 (kg) Calculate Shipping
Shipping Dimension: 55.88cm x 40.64cm x 15.24cm
Condition: 7 - Good (?)
Date Posted: Aug 25, 17 3:01pm (PST)
Edited: Aug 26, 17 10:45am
About Seller: American Hi-Fi
American Hi-Fi is a dealer or commercial user
Winnipeg, MB
[other classified ads]
Product Brand: RGR
Product Model: Four-1HG
Feedback Received: 31  See details
100% Positive Feedback

Days in System:1
Avg. Views/Day:264.00

The feedback period is over for this ad, so feedback is no longer allowed. For details please read this FAQ entry.
Share |


Sponsored post - log in to remove this ad.
** This Ad is Marked as SOLD by seller and cannot be responded to. **

This is the Robert Grodinsky Research (RGR) Model Four-1HG preamplifier that was rated so well by the Audio Critic and it was the source of much discussion in several issues of The Absolute Sound during the mid 1980's.
This is a full function preamp with 2 phono inputs which can be set for MM or MC cartridges, defeatable filters and tone controls. This is a cult classic preamplifier cited for its wide soundstage and its excellent phono stage. It is in very good condition and has been fully upgraded internally with new capacitors, connections resoldered and switches and contacts cleaned.

Manufacturer: Robert Grodinsky Research, USA

Inputs: 2 x Phono MM or MC: (47k, 1k, 100 ohms),
2 x Aux, 2 x Tape Monitor

Tape record outputs: 2 x 2 RCA

Phono equalization: RIAA +,- 0.1 dB

Rated output voltage: 2 V

THD (1 kHz): 0.005%

Intermodulation: 0.006%

Power bandwidth: 0.5 Hz to 300 kHz

Frequency response: 20 Hz to 20 kHz (+,- 0.05 dB)

Noise ratio: Phono MM/MC: -80dB

Outputs: Pre Outs 2 pair RCA
Tone controls: Bass at 20 Hz: +,- 12 dB,
Treble at 15 kHz: +,- 12 dB
Tone Control Bypass switch.
Switchable sub sonic filter.


Shipping and GST included in price

Canuck Audio Mart is FREE!

Forum Messages


Dealer News

Ad Stats

  • Last 48 hrs: 409
  • Active: 7262
  • Total: 652509

Replies Stats

  • Last 48 hrs: 793
  • Total: 1334225
    (since Nov 25th, 2004)