background image

17

16

Stream screen 

The Stream screen is divided into three sections. The items on this screen 
will reflect the makeup of a particular system.

Internet Music:

 Accesses the various Internet-based and wireless sources 

that the Relentless Preamplifier can access. Subscriptions are required for 
these services.

Cloud: 

This section displays the cloud-based locations that have been 

configured for music storage. For more information, please contact your 
dealer.

Local Server:

 Displays local networked computers and hard drives through 

DLNA. For more information, please contact your dealer. 

Note: 

The network input will automatically be selected when any of the 

streaming sources and music is selected for playback, and has to be selected 
first on the Control Screen before selecting one of the streaming sources 
on the Stream Screen.

Play To screen  

Once a network source is chosen, press the Play To button and select the 
Relentless Preamplifier from the list presented. The items on this screen 
will reflect the makeup of a particular system.

Queue and favorites screens

Queue lists the current music selection being played from network storage locations. 

Favorites allows you to organize your network stored music into favorite folders and playlists. 
Streaming music services have their own specific queue and playlist functions.

The Relentless Preamplifier requires no user maintenance other than to keep it clean and ensure that 
the vents remain unobstructed.

The Relentless Preamplifier has a fine, highly polished finish that can be easily damaged. To clean the 
preamplifier, spray a small amount of distilled water onto the supplied microfiber cloth and gently wipe 
the preamplifier’s surface along the direction of the metal grain, with light pressure only. Never use a 
circular motion or heavy pressure, as this can permanently scratch the machined surfaces. Do not rub 
the surface with the cloth, and do not spray any liquid directly onto the preamplifier.

If dust or other contaminants or objects collect around the vents at the top and bottom of the 
preamplifier, remove small objects by hand and use a shop vacuum or hand vacuum to remove the 
dust. Use a brush attachment on the vacuum to avoid scratching the preamplifier’s surface.  

If you should need to transport or ship the preamplifier, be sure to use the original packing materials. 
Allow the preamplifier to cool down for at least one hour before you wrap and package it.

MAINTENANCE

TROUBLESHOOTING

Preamplifier will not power up

If the front meters are not illuminated, follow the procedure outlined below. If one step succeeds in 
activating the power, stop there and ignore the other steps.

 

1.  If the LED in the middle of the Standby button on the front of the preamplifier is lit, push 

 

 

the button to turn the preamplifier on.

 

2.  If the LED in the middle of the Standby button is not lit, check to make sure the AC cord 

 

 

is plugged into the wall outlet.

 

3.  Check at the back of the power supply to make sure the 15-amp IEC connector is pushed 

 

 

all the way into the jack on the back of the power supply.

 

4.  Check to make sure the three units are securely connected via their locking feet.

 

5.  Open the fuse connector integrated into the power switch on the back of the power  

 

 

supply. Check to see if the fuse is blown. (The conductor inside the fuse will be severed  

 

 

and you may see burn marks on the fuse.) Be sure to replace the 10A fuse with one of the  

 

 

proper value. Consult your dealer or Dan D’Agostino Master Audio Systems, LLC.

 

6.  Check your household electrical box to make sure the circuit breaker has not been  

 

 

tripped. If it has, flip the breaker back on.

 

7.  If the breaker trips again, check the speaker cable connection on your amplifier and the  

 

 

speaker to make sure that the terminals are not shorted, and check the entire length of 

 

 

the cable to ensure there has been no damage to it. 

 

8.  If all of these steps fail to return power to the preamplifier, consult your dealer for service.

Polarity: 

Press the Normal or Inverted button to flip the system’s absolute polarity. There is no “right” 

setting; it varies from recording to recording. Use the setting that sounds better on the recording 
currently playing.

Dark Mode: 

These buttons dim the Relentless Preamplifier’s front meters after a period of time for 

listeners who prefer a dark environment.

The bottom row of the Player page includes queue control, favorites selections, stream options, and 
play to choices. The stream option opens the page that reveals the Internet streaming sources, cloud 
and network drives that the Relentless Preamplifier can access in the connected system (see below).

Summary of Contents for Relentless

Page 1: ...RELENTLESS PREAMPLIFIER ...

Page 2: ... is also the first D Agostino preamplifier to offer an optional Digital Streaming Module DSM housed in the power supply control chassis and completely isolated from the analog circuitry As a part of the digital streaming capabilities Tidal Qobuz and Spotify subscription services are available With appropriately encoded music files MQA decoding is standard Customized apps for iOS devices provide ea...

Page 3: ...ed if care is not taken To maintain the preamplifier s pristine surface we strongly suggesting wearing the supplied white lifting gloves when handling to avoid abrasion fingerprints caused by oils from skin etc See Maintenance for instructions on cleaning Installation requirements The Relentless Preamplifier s three metal chassis makes it much heavier than the average preamplifier Make sure the su...

Page 4: ...nd Power Supply rear 1 XLR input jacks 2 RS 232 control connector 3 Optional Digital Streaming Module 4 Access for preamplifier control programming 5 Access for DSM programming 6 12 volt trigger outputs 7 Zone 1 XLR output jacks 8 Zone 2 XLR output jack 9 Bluetooth antenna 10 IEC power cord connector 11 Main power switch 12 Power supply DC output x 2 for future products 6 6 7 8 1 2 3 4 5 1 2 3 4 5...

Page 5: ...ne 1 outputs is for use with subwoofers Additionally each Relentless Preamplifier audio chassis includes a Zone 2 output Please see the Zone 2 operation section of this Owner s Manual AC cord The Relentless Preamplifier is supplied with a high quality AC cord tipped with a 15 amp IEC connector at the preamplifier end and a three conductor AC plug at the other end You may use a different power cord...

Page 6: ...mplifier is in standby off mode the LED in the middle of the button will be lit Push the button to turn the unit on When power is on the LED in the middle of the button will go off and the volume indicator will illuminate Push the button once more to turn the unit off The light for the volume indicator will go out and the LED in the middle of the Standby button will light up The Relentless Preampl...

Page 7: ...l button that corresponds to the desired source The LED in the middle of the front panel button red for Zone 1 green for Zone 2 for the active source will illuminate Theater Bypass Input Three can be set for use as a Theater Bypass input This feature makes it easy to include the Relentless Preamplifier in a multichannel home theater audio system To set Input Three for this operation press and hold...

Page 8: ...ired this display can be turned off To change the setting press the more button navigate to the display button and select the setting to the desired option Network connection The Relentless Preamplifier needs to be connected to a router with internet connectivity using a wired or wireless connection to take advantage of all the features of the Dan D Agostino Relentless Preamplifier app Through the...

Page 9: ...n Labs music player software subscription required and the digital module s Windows driver JRiver software is also a good option when using Windows PC Please visit the Relentless Preamplifier product page at www dandagostino com for additional information on connecting a Windows PC to the Relentless Preamplifier and to download the required Windows driver DIGITAL INPUT SELECTION FROM THE FRONT PAN...

Page 10: ...id scratching the preamplifier s surface If you should need to transport or ship the preamplifier be sure to use the original packing materials Allow the preamplifier to cool down for at least one hour before you wrap and package it MAINTENANCE TROUBLESHOOTING Preamplifier will not power up If the front meters are not illuminated follow the procedure outlined below If one step succeeds in activati...

Page 11: ...connections for the malfunctioning channel Reconnect any cables that may have become disconnected Inspect the cable to make sure it has not been damaged If it has been damaged replace it 4 If you are using monoblock amplifiers such as the Relentless Amplifier make sure both amplifiers are turned on 5 Swap the left channel interconnect cable from the preamplifier to the amplifier with the right cha...

Page 12: ...an D Agostino Master Audio Systems LLC for service the customer must first obtain a Return Authorization RA number by calling Dan D Agostino Master Audio Systems LLC The RA number must be marked clearly on the side of the package 8 This warranty covers only defects in products made by Dan D Agostino Master Audio Systems LLC It does not cover incidental or consequential damages or damages to other ...

Page 13: ...www dandagostino com 2021 DAN D AGOSTINO MASTER AUDIO SYSTEMS LLC ALL RIGHTS RESERVED Designed handmade and assembled in the USA using USA machinists vendors and parts procurement ...

Reviews: