Preface
This post is a starter for my impressions on Allo Volt+D. It is not a review; I'm not qualified to do one.
It is simply a bunch of thoughts that I can string through and hope it comes out cohesive.
I've been interested in Class D amps. They hold great promise for the future.
Nominal Class D amps are all around us. Mobiles, TVs, soundbars, BT speakers.
In a way they are like Decepticons living amongst us.
The last I heard really good Class D was a few years ago, maybe 2015.
They sounded really good, but they were from NAD. So really expensive.
Over the ensuing years I've heard some more but nothing perked my ears.
@venkatcr's thread and a few queries about starter amps, cost effective ones has made me a bit curious.
So over the last week or so, I pinged some friends who have friends.
One person had this unit; the Allo Volt+D. So I borrowed it for a few days.
Intend to take it for a spin in various combinations with what I have at home.
Price and Build/Looks
What does it cost? What is it? What does it do? Who is it for?
Will try to answer these questions the best as I can.
The amp unit itself retails at about 7500 INR. You can buy a PS brick that will add about 800 INR to the amp cost.
Or one can use a laptop PS that meets the spec. The prices are inclusive of GST.
I think all shipments are from Bangalore, including worldwide.
So yeah, even though it is a European brand, it's a Make-In-India venture. Nice
It is a power amp with a 24-step attenuator that acts as a volume control.
It is fed by a pair or RCA input (L/R) and has a pair of speaker terminals (L/R).
The unit does not have an on/off switch, but there is a mute toggle switch.
There is no pot but instead it is fitted with a stepped attenuator (24 clicks).
Some say that these are better than cheap pots. Maybe so, maybe not.
I found it takes a bit of getting used to. The knob is hard to turn.
There is a noticeable difference in loudness/bass/detail when going up or down.
There are gain switches at the bottom. 20dB and 26dB setting.
I chose 26dB because 20dB made me dial the volume beyond 18 clicks.
20dB may work for high sensitivity speakers, 93+. Mine are all 86-88 dB.
The unit comes in a clear acryclic case. Same as other Allo products.
You can see every thing inside. Nothing hidden.
The footprint is 10" x 7" x 2.5" incl terminals. Very lightweight and slides easily.
I am still not convinced about it looks wise, but it does the job.
The PS that comes with it is a 19V 3.15A brick; like the ones for a laptop.
The terminals look to be of decent quality. Nice shiny stuff (gold plated? maybe)
The speaker terminals are proper binding posts, although short.
Meaning a full size banana plug will fit snug but the pin will not go in completely.
Bare wire connections are possible too. Seems like it can take up to 12AWG.
The rest of the post (or multiple posts) will be about who is it for and what combination I tried.
Starter Rigs
A lot of queries come about when one wants to get into this hobby (or madness) of stereo systems.
Let's say:
- an uncle of yours has a pair of BS speakers that he's will give you for free
- or you saw a good deal on the forum for small-ish monitors (say under 15K)
- or you see a decent deal on HiFiMart (they have some very decent speakers in the 10-25K range)
How does one go about it. Enter the Volt+D.
Combo 1: Mobile Phone --> Volt+D --> MA Radius 45/KEF R300
Tried this with a 3.5 to 2-RCA connection. Not convinced. It sounds very weak.
May be the aux out on mobile is not line level.
Combo 2: BT receiver --> Volt+D --> MA Radius 45/KEF R300
Again 3.5 to 2-RCA connection. Spotify streaming and transfer to BT Rxr.
Not convincing again. Possibly same reason not enough line level and BT quality.
Combo 3: CCA (opt) --> Schiit Modi2 (DAC) --> Volt+D --> KEF R300
Decided to play only on R300. Too lazy to do speaker swap.
Spotify streaming on mobile and cast to CCA. Phone/CCA volume at max.
Now I got it singing. The volume was between 14-18 clicks depending on track being played.
It sounded way too bright for my liking, but bass and vocals were very good.
Punchy, tight bass with strong vocals (both male, female and multiple singers).
Very good instrument separation. Every note was there, but it felt a bit too tingly to my ears/taste.
Music was articulate, but ear fatigue set in after 10-15 mins.
Some folks like this presentation, I don't.
I guess its because:
- CCA (opt) + Modi is pretty sparkly
- Volt+D just lays it all out there
- KEFs just blame the chain (they gave this to me scenario)
Combo 4a: CCA (analog) --> Volt+D --> KEF R300
Aha!! This chain sounds way better than combo 3. Got to hand it to the little CCA puck.
It has a decent DAC for its price point. The volume was between 14-18 clicks depending on track being played.
The HF presence and sparkliness is still there but it is definitely more enjoyable.
I could train my ears and mind to other areas of music, vocals and instruments.
The amount of detail that this combo fleshes out and renders was kinda surprising.
The amp is Class D bright, but in a good way.
The low end is good, full and punchy, never lean sounding. Vocals are bold & raw, yet nuanced.
I noticed a few new things in familiar tracks in the up top frequency region.
Some of the song set used today (stuff I am familiar with):
Hit The Road Jack (Ray Charles): Female chorus + male vocals; good track for channel level/separation check
Hotel California - MTV Live (Eagles): Intro is something that builds slowly; good kick drum
Famous Blue Raincoat (Lenny Cohen): Male vocals; deep nuanced voice
I Put A Spell On You (Nina Simone): Female vocals; sibilance check track; big band
Keith Don't Go (Nils Lofgren): this is very difficult for most systems; either great or very busy
Nine Cats (Porcupine Tree): Inherently sibilant track, tingly music, double beat kick drums
World A Music (Ini Kamoze): Reggae beat; interesting echo in vocals
Smoke On The Water (Deep Purple): Opening guitar lick, drums + high-hat
Enter Sandman (Metallica): Strong base guitar and drums; noisy lead guitaring too
Sossity (Jethro Tull): Ian Anderson actually tapping the tambourine to his thigh and up above
Rock'n Roll (Led Zepp): Bonham's drums, Plant's vocal, Page on guitar; just a lovely rocking track
Who Are You (The Who): Keith Moon's parallel universe on the drums, a nice guitar lick in the middle
Behind Blue Eyes (The Who): Daltry's strong raspy vocals
Bohemian Rhapsody (Queen): What can I say about this; rock/opera/scale
Trains (Porcupine Tree): just a fantastic track for quiet and loud passages
Blackest Eyes (Porcupine Tree): the opening guitars; there are quite a few of them actually
... and more
Tomorrow I'll listen to a bit more of combo 4a but with old Hindi music
If interested, stay tuned ...
Cheers,
Raghu
This post is a starter for my impressions on Allo Volt+D. It is not a review; I'm not qualified to do one.
It is simply a bunch of thoughts that I can string through and hope it comes out cohesive.
I've been interested in Class D amps. They hold great promise for the future.
Nominal Class D amps are all around us. Mobiles, TVs, soundbars, BT speakers.
In a way they are like Decepticons living amongst us.
The last I heard really good Class D was a few years ago, maybe 2015.
They sounded really good, but they were from NAD. So really expensive.
Over the ensuing years I've heard some more but nothing perked my ears.
@venkatcr's thread and a few queries about starter amps, cost effective ones has made me a bit curious.
So over the last week or so, I pinged some friends who have friends.
One person had this unit; the Allo Volt+D. So I borrowed it for a few days.
Intend to take it for a spin in various combinations with what I have at home.
Price and Build/Looks
What does it cost? What is it? What does it do? Who is it for?
Will try to answer these questions the best as I can.
The amp unit itself retails at about 7500 INR. You can buy a PS brick that will add about 800 INR to the amp cost.
Or one can use a laptop PS that meets the spec. The prices are inclusive of GST.
I think all shipments are from Bangalore, including worldwide.
So yeah, even though it is a European brand, it's a Make-In-India venture. Nice
It is a power amp with a 24-step attenuator that acts as a volume control.
It is fed by a pair or RCA input (L/R) and has a pair of speaker terminals (L/R).
The unit does not have an on/off switch, but there is a mute toggle switch.
There is no pot but instead it is fitted with a stepped attenuator (24 clicks).
Some say that these are better than cheap pots. Maybe so, maybe not.
I found it takes a bit of getting used to. The knob is hard to turn.
There is a noticeable difference in loudness/bass/detail when going up or down.
There are gain switches at the bottom. 20dB and 26dB setting.
I chose 26dB because 20dB made me dial the volume beyond 18 clicks.
20dB may work for high sensitivity speakers, 93+. Mine are all 86-88 dB.
The unit comes in a clear acryclic case. Same as other Allo products.
You can see every thing inside. Nothing hidden.
The footprint is 10" x 7" x 2.5" incl terminals. Very lightweight and slides easily.
I am still not convinced about it looks wise, but it does the job.
The PS that comes with it is a 19V 3.15A brick; like the ones for a laptop.
The terminals look to be of decent quality. Nice shiny stuff (gold plated? maybe)
The speaker terminals are proper binding posts, although short.
Meaning a full size banana plug will fit snug but the pin will not go in completely.
Bare wire connections are possible too. Seems like it can take up to 12AWG.
The rest of the post (or multiple posts) will be about who is it for and what combination I tried.
Starter Rigs
A lot of queries come about when one wants to get into this hobby (or madness) of stereo systems.
Let's say:
- an uncle of yours has a pair of BS speakers that he's will give you for free
- or you saw a good deal on the forum for small-ish monitors (say under 15K)
- or you see a decent deal on HiFiMart (they have some very decent speakers in the 10-25K range)
How does one go about it. Enter the Volt+D.
Combo 1: Mobile Phone --> Volt+D --> MA Radius 45/KEF R300
Tried this with a 3.5 to 2-RCA connection. Not convinced. It sounds very weak.
May be the aux out on mobile is not line level.
Combo 2: BT receiver --> Volt+D --> MA Radius 45/KEF R300
Again 3.5 to 2-RCA connection. Spotify streaming and transfer to BT Rxr.
Not convincing again. Possibly same reason not enough line level and BT quality.
Combo 3: CCA (opt) --> Schiit Modi2 (DAC) --> Volt+D --> KEF R300
Decided to play only on R300. Too lazy to do speaker swap.
Spotify streaming on mobile and cast to CCA. Phone/CCA volume at max.
Now I got it singing. The volume was between 14-18 clicks depending on track being played.
It sounded way too bright for my liking, but bass and vocals were very good.
Punchy, tight bass with strong vocals (both male, female and multiple singers).
Very good instrument separation. Every note was there, but it felt a bit too tingly to my ears/taste.
Music was articulate, but ear fatigue set in after 10-15 mins.
Some folks like this presentation, I don't.
I guess its because:
- CCA (opt) + Modi is pretty sparkly
- Volt+D just lays it all out there
- KEFs just blame the chain (they gave this to me scenario)
Combo 4a: CCA (analog) --> Volt+D --> KEF R300
Aha!! This chain sounds way better than combo 3. Got to hand it to the little CCA puck.
It has a decent DAC for its price point. The volume was between 14-18 clicks depending on track being played.
The HF presence and sparkliness is still there but it is definitely more enjoyable.
I could train my ears and mind to other areas of music, vocals and instruments.
The amount of detail that this combo fleshes out and renders was kinda surprising.
The amp is Class D bright, but in a good way.
The low end is good, full and punchy, never lean sounding. Vocals are bold & raw, yet nuanced.
I noticed a few new things in familiar tracks in the up top frequency region.
Some of the song set used today (stuff I am familiar with):
Hit The Road Jack (Ray Charles): Female chorus + male vocals; good track for channel level/separation check
Hotel California - MTV Live (Eagles): Intro is something that builds slowly; good kick drum
Famous Blue Raincoat (Lenny Cohen): Male vocals; deep nuanced voice
I Put A Spell On You (Nina Simone): Female vocals; sibilance check track; big band
Keith Don't Go (Nils Lofgren): this is very difficult for most systems; either great or very busy
Nine Cats (Porcupine Tree): Inherently sibilant track, tingly music, double beat kick drums
World A Music (Ini Kamoze): Reggae beat; interesting echo in vocals
Smoke On The Water (Deep Purple): Opening guitar lick, drums + high-hat
Enter Sandman (Metallica): Strong base guitar and drums; noisy lead guitaring too
Sossity (Jethro Tull): Ian Anderson actually tapping the tambourine to his thigh and up above
Rock'n Roll (Led Zepp): Bonham's drums, Plant's vocal, Page on guitar; just a lovely rocking track
Who Are You (The Who): Keith Moon's parallel universe on the drums, a nice guitar lick in the middle
Behind Blue Eyes (The Who): Daltry's strong raspy vocals
Bohemian Rhapsody (Queen): What can I say about this; rock/opera/scale
Trains (Porcupine Tree): just a fantastic track for quiet and loud passages
Blackest Eyes (Porcupine Tree): the opening guitars; there are quite a few of them actually
... and more
Tomorrow I'll listen to a bit more of combo 4a but with old Hindi music
If interested, stay tuned ...
Cheers,
Raghu
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